Find the 80th percentile of the distribution of the average of 49 fly balls.

Answers

Answer 1

The 80th percentile of the distribution of the average of 49 fly balls is approximately 254.2 feet

The 80th percentile of the distribution of the average of 49 fly balls can be found using the formula for the sample mean and the Z-score. Given that the mean distance of fly balls hit is 250 feet, the standard deviation is 50 feet, and the sample size is 49, we can calculate the 80th percentile as follows:

Calculate the Z-score corresponding to the 80th percentile, which is 0.842

Use the Z-score formula to find the sample mean:

Sample Mean=Population Mean + Z ×  Standard Deviation​/ Sample Size

​Sample Mean=250+0.842× 50/ √49

Sample Mean=250+0.842×5

Sample Mean=250+4.2

Sample Mean=254.2

Therefore, the 80th percentile of the distribution of the average of 49 fly balls is approximately 254.2 feet

Complete question:

Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 250 feet and a standard deviation of 50 feet. We randomly sample 49 fly balls. Find the 80th percentile of the distribution of the average of 49 fly balls.


Related Questions

0/1 points | previous answers devorestat9 4.e.041. ask your teacher my notes question part points submissions used the automatic opening device of a military cargo parachute has been designed to open when the parachute is 200 m above the ground. suppose opening altitude actually has a normal distribution with mean value 200 and standard deviation 31 m. equipment damage will occur if the parachute opens at an altitude of less than 100 m. what is the probability that there is equipment damage to the payload of at least one of five independently dropped parachutes? (round your answer to four decimal places.)

Answers

0.3046% chance of damaging at least one of five payloads. First, determine how many standard deviations it takes for the parachute to open at 100 meters. So 200 m - 100 m = 100 m 100 m / 31 m = 3.2258 Looking up on a standard normal table, the probability of having that deviation or higher is 0.00061, or 0.061% Since you're looking for the probability of damaging at least one of five, the easiest way of calculating that is to subtract from 1 the probability of having all five parachutes successfully deploy. So 1 - (1 - 0.00061)^5 = 1 - 0.99939^5 = 1 - 0.996953719 = 0.003046281 = 0.3046%

A pizza parlor has 8 different toppings and 3 different cheeses to choose from on the menu. How many pizza combinations are possible if each pizza has 1 topping and 1 cheese

Answers

Final answer:

To find the number of pizza combinations available using 1 topping and 1 cheese from 8 different toppings and 3 different cheeses, one multiplies the number of topping choices by the number of cheese choices, giving 8 x 3 = 24 possible combinations.

Explanation:

Calculating Pizza Combinations

When calculating the number of possible pizza combinations with 1 topping and 1 cheese from 8 different toppings and 3 different cheeses, we use basic counting principles. Each pizza can be thought of as a combination of one topping and one cheese. Since these choices are independent, we multiply the number of options for toppings by the number of options for cheeses to find the total combination possibilities. This results in 8 toppings multiplied by 3 cheeses, giving 24 possible combinations.

The formula used is straightforward: Number of combinations = Number of toppings × Number of cheeses.

Pizza Combination Calculation Example

For instance, if you were at a pizza parlor where you could choose from pepperoni, mushrooms, onions, and 5 other toppings, along with mozzarella, cheddar, and one other cheese, you could create 24 unique pizzas. Just pick one topping and one cheese, and that's your combination.

Find the approximate side length of a square game board with an area of 164 in2

Answers

Squares have the same length and width.
Area of a rectangle/square is length X width
A=LW
164 = LW
Now we know L and W are the same because its a square.
13X13 is 169
12X12 is 144
It appears the lengths are just less than 13.

A computer can sort x objects in t seconds, as modeled by the function below: t=0.007x^2+0.003x. How long, in seconds, will it take the computer to sort 15 objects? Round your answer to the nearest hundredth of a second.

Answers

x objects in t seconds.....how long to sort 15 objects....so x = 15

t = 0.007(15^2) + 0.003(15)
t = 0.007(225) + 0.045
t = 1.575 + 0.045
t = 1.62 seconds <===

As modeled by the function below: t=0.007x^2+0.003x. The time it will  take the computer to sort 15 objects is 1.62sec

What is Time?

Time is the ongoing progression of existence and things that happen in what seems to be an irrevocable order from the past, present, and forward into the future.

Given:

t = 0.007x^2+0.003x

x = 15

Substituting the value in the equation we get,

t = 0.007(15)^2+0.003(15)

t = 0.007(225) + 0.045

t = 1.575 + 0.045

t = 1.62sec

Hence, It will take 1.65sec to sort 15 objects

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4 gallons of gas cost 16.80. what is the price per gallon?

Answers

$4.20
Because $16.80 is the price of 4 gallons and if you want to find out the price for 1 gallon you divide 16.8 by 4

Find the solution of the differential equation 3e^(3x)dy/dx=â9x/y^2

Answers

Final answer:

To solve the given differential equation, variables need to be separated, followed by integration of both sides. Since the equation involves both exponential and inverse square terms, separation of variables and integration are key steps. A specific solution also requires substituting a given function of y into the found general solution to determine any integration constants.

Explanation:

The question involves solving a differential equation 3e^(3x)dy/dx = -9x/y^2. First, we need to recognize this as a separable differential equation, which can be solved by isolating all terms involving y on one side and all terms involving x on the other side. After separation, we integrate both sides with respect to their respective variables.

Step 1: Separate the variables. We get dy/y^2 = -3x e^(-3x) dx.

Step 2: Integrate both sides. The integration of dy/y^2 with respect to y is -1/y, and the integration of -3x e^(-3x) with respect to x requires integration by parts or a table of integrals.

Step 3: Upon integration, we would find an implicit solution involving y and x, combined with an integration constant that needs to be determined based on initial conditions or additional information. Since specific initial conditions are not provided in the initial question, we'd include a constant C in our final expression.

For a specific solution when y(x) = cos(3x), additional steps are required to substitute this y expression into our general solution and solve for the constant.

Polygon ABCDE rotates 52º about the origin to create polygon A′B′C′D′E′. If measure of angle BCD equal 31 º , what is the measure of angle B'C'D' ?

sorry cant give answers not a multiple choice question

Answers

Rotation doesn't change the shape.  The measure of B'C'D' is still 31 degrees

Answer:

Answer is 31,

Step-by-step explanation:

PLATO Confirmed

Which fraction is equivalent to 4 over negative 9?

A.) -4 over 9
B) 4 over 9
C) -4 over -9
D) 9 over 4

Answers

A is correct.  Just move the negative sign from in front of the 9 and place it in front of the 4.

Answer:

A) -4 over 9

Step-by-step explanation:

We have the fraction [tex]\frac{4}{-9}[/tex] the equivalent of this fraction is [tex]\frac{-4}{9}[/tex]

[tex]\frac{4}{-9}= \frac{-4}{9} =-\frac{4}{9}[/tex]

Both fractions are the same and equivalent, the negative sign makes the whole fraction negative regardless of whether it is in the numerator or denominator.

Scott bought three bags of candy with 75 pieces in each one. He plans to divide all the candy evenly among seven friends. How many pieces of candy will Scott have left for himself?

Answers

How many pieces of candy total?  (3 bags)(75 pieces/bag) = 225 pieces

How many pieces to each friend?  225 pieces / 7 friends = 32 pieces each, with 1 piece left over for himself.

Answer:

The answer is only one piece of candy

Step-by-step explanation:

Firstly, we have to determine the total amount of pieces of candy:

There are three bags with 75 pieces in each one, so the total is:

[tex]75+75+75=225[/tex]

Then, in order to determine the amount of pieces of candy for every friend,

we have to divide the total amount by 7, where the remainder of the division is the answer.

[tex]\frac{225}{7}=32*7+1[/tex]

Remainder=1

Finally, every friend of Scott receive 32 pieces of candy evenly and Scott is left with only one piece of candy.

Your answer A chef buys 5.46 pounds of ground turkey to make some casseroles. Each casserole requires 0.13 pound of turkey. How many casseroles can the chef make?

Answers

All you need to do is divide 5.46 by 0.13 to get 42
42 casseroles because literally all you have to do is divide 5.46 by 0.13 because you want to find out how many casseroles he can make, therefore you would need to use division. Really simple. 

( 10x-20) (6x + 8) what is the value of x

Answers

(10x-20)=(6x+8)

We simplify the equation to the form, which is simple to understand
(10x-20)=(6x+8)

Remove unnecessary parentheses
10x-20=(6x+8)

Remove unnecessary parentheses
10x-20=6x+8

We move all terms containing x to the left and all other terms to the right.
+10x-6x=+8+20

We simplify left and right side of the equation.
+4x=+28

We divide both sides of the equation by 4 to get x.
x=7

The solution is, the value of x is 7.

What is  simplification?

Simplify simply means to make it simple. In mathematics, simply or simplification is reducing the expression/fraction/problem in a simpler form. It makes the problem easy with calculations and solving.

here, we have,

given that,

(10x-20)=(6x+8)

We simplify the equation to the form, which is simple to understand

(10x-20)=(6x+8)

Remove unnecessary parentheses

10x-20=(6x+8)

Remove unnecessary parentheses

10x-20=6x+8

We move all terms containing x to the left and all other terms to the right.

+10x-6x=+8+20

We simplify left and right side of the equation.

+4x=+28

We divide both sides of the equation by 4 to get x.

x=7

Hence, The solution is, the value of x is 7.

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Sue traveled 96 miles in 12 hours. A unit rate to describe Sue's travel is 8 miles per hour. What is another unit rate in this situation? (1 point) 1/8 mile per hour, 1/8 hour per mile, 1 mile per hour, 8 hours per mile

Answers

96 miles in 12 hrs...

miles / hr = 96/12 = 8 miles per hr

hr / mile = 12/96 = 1/8 hr per mile <==

Answer:

I believe the answer is 1/8 hour per mile

Step-by-step:

I don't know. I  just believe that that is the most reasonable answer to this question and I have this question as well, it might seem hard it's really not.

When all seats are filled, a Ferris wheel can take 72 people for a rude. There are 313 people waiting to ride the wheel. Which drawing represents the number of rides with all the seats filled. Is the answer B?

Answers

Yes, the answer would be "b". There are a total of 313 people wanting to ride it. Only 72 people can ride it at a time. "x" in the drawing represents how much times is takes for all the people to ride it. You are correct, hope this helps! =)

Which of the following is an example of a proper fraction?

A. 7⁄6
B. 4⁄3
C. 3⁄4
D. 4⁄4

Answers

C. 3/4 because the numerator is smaller than the denominator
3/4 is a proper fraction because it is less than 1 and the numerator is less than the denominator.

Hope this helps!

will the standard form 3.2 x 10 -4 be more or less than 1 Explain what effect the negative exponent has

Answers

First thing you got to do is solve the notation:

3.2×10^-4
=.000032

Its going to be lesser because anything that is get twice is less than one what's just say that...

1.2×10-2
=0012 so its going to be smaller than 1

Your answer is smaller.

If $850 is deducted each month for 12 months from your checking account to pay your mortgage, what impact will it have on your checking account balance?
A) $10,200
B) $850
C) -$10,200
D) -$850

Answers

The answer would be C. Hope it helps
It's C because they are already taking away so has to be negative and if it is over a 12 month time period it can't be 850 so C is your answer

A restaurent sold 350 less hotdogs than hamburgers. Altogether, the restaurant sold 700 hotdogs and hamburgers. How many of each did they sell?

Answers

Let x=number of hamburgers, so number of hotdogs is x-350.
Altogether x+x-350=700, 2x=1050, x=525, so the number of hamburgers is 525 and the number of hotdogs is 175.
Let d=# of hot dogs, and b=# of burgers.  d+b=700, and d = b-350.

d + b = 700 becomes b-350 + b = 700.   => 2b= 1050; b = 525.

Then d=525-350 = 175.

They sell 175 hot dogs and 525 burgers.

Do 175 and 525 add up to 700?   yes. 

Joan invests $4000 in an account that earns 3% simple interest. How much will Joan have in the account in 10 years?

Answers

9000 i think but i am not sure

If Joan invests $4000 in an account that earns 3% simple interest, she will have $5,375.67 in the account after ten years.

If y =18 and x=60 what is the constant of proportionality

Answers

It may be six 3x6=18

6x10=60

Final answer:

The constant of proportionality when y = 18 and x = 60 is calculated by dividing y by x, which results in a constant of 0.3.

Explanation:

To find the constant of proportionality when y = 18 and x = 60, we must assume that the relationship between y and x is directly proportional. This means that as x increases, y increases at a constant rate, and vice versa. If the relationship is directly proportional, we can write y = kx, where k is the constant of proportionality.

To calculate k, we simply divide y by x. So we have:

k = y / x
k = 18 / 60
k = 0.3

Therefore, the constant of proportionality is 0.3.

Please help me!
A pair of shoes is on sale for $29.95. What will the sales tax on the shoes be if the sales tax rate is
7 1/2%?
$1.99
$2.10
$2.25
$2.99

Answers

You need to find 7 1/2% of $29.95.
To do that, just multiply the percent by the number.

7 1/2% * $29.95 =

= 7.5% * $29.95

= 0.075 * $29.95

= $2.24625

The answer is $2.25

Option C)The sales tax will be $2.25.

Convert the sales tax rate from a percentage to a decimal,
7.5% becomes 0.075.

Multiply the decimal by the total cost of the shoes,

0.075 × 29.95
= 2.24625.

$2.25.

Therefore, the sales tax on the shoes will be $2.25,Option C

Solve this quadratic equation using the quadratic formula. 5 - 10x - 3x2 = 0

Answers

The procedure is in the photo, good luck!

Answer:

Since, by the quadratic formula,

The solution of a quadratic equation [tex]ax^2+bx+c=0[/tex] is,

[tex]x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]

Here, the given quadratic equation,

[tex]5-10x-3x^2=0[/tex]

[tex]-3x^2-10x+5=0[/tex]

By the above formula,

[tex]x=\frac{-(-10)\pm \sqrt{(-10)^2-4\times -3\times 5}}{2\times -3}[/tex]

[tex]=\frac{10\pm \sqrt{100+60}}{-6}[/tex]

[tex]=\frac{10\pm \sqrt{160}}{-6}[/tex]

[tex]=\frac{5\pm 2\sqrt{10}}{-3}[/tex]

[tex]\implies x=-\frac{5+2\sqrt{10}}{3}\text{ or }x=-\frac{5-2\sqrt{10}}{3}[/tex]

What does use a multiplicative comparison to explain its meaning mean?

Answers

Multiply or divide to solve word problems involving multiplicative comparison, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem, distinguishing multiplicative comparison from additive comparison.

I hope this helps you.

Lulu buys a dress for $67, a hat for $35, and shoes for $49. How much did Lulu spend?

Answers

Sum up $67, $35 and $49.  Answer:  $151.
67+35= $102+$49= $151

A machine laying underground cable can place 125 meters of cable in 5 minutes

Answers

So to find the unit rate, you have to divide 125 divided by 5 to find how much cable can be placed in 1 minute. 125 divided by 5= 25
So, 25 meters of cable can be placed in 1 minute. 
The ratios are: 
125:5 = 25:1
Another way to write the ratio is:
125/5 = 25/1

I hope this helps:)

The machine lays cable at a rate of 25 meters per minute. This is calculated by dividing 125 meters by 5 minutes.

To determine how quickly the machine can lay underground cable, we need to calculate the rate of cable it places per minute. We start by noting that the machine can lay 125 meters of cable in 5 minutes.

We calculate the rate as follows:

Divide the total length of cable by the total time: 125 meters / 5 minutes = 25 meters per minute.

This means the machine lays cable at a rate of 25 meters per minute.

Complete Question: A machine laying underground cable can place 125 meters of cable in 5 minutes. What is the rate per minute?

Graph the line for y+1=−35(x−4) on the coordinate plane.
Just write what the coordinates would be

Answers

i just did the test and your coordinates are (4,-1) and (9,-4). I am completely sure. Hope i was helpful.

Answer:

(0, 139) and (139/35, 0)

Step-by-step explanation:

To graph a line, two points are needed. Taking x = 0 and replacing this value in the equation, we get:

y+1=−35(0−4)

y = 140 - 1

y = 139

Then, the point (0, 139) is on the line.

Taking y = 0 and replacing this value in the equation, we get:

0+1=−35(x−4)

1/(-35) = x -4

1/(-35) + 4 = x

139/35 = x

3.971 = x

Then, the point (139/35, 0) is on the line.

Sam gets $1000 dollars per month. She has to spend $20 a day on transportation, she also needs to buy groceries each week and have $30 extra spending money per week. How much money should be spent on food per day?

Answers

Sam makes 1,000 dollars every month. How much does she make per day?
1,000 ÷ 30 = $33.33/day. This is her daily budget.
Transportation cost = $20/day. 
Spending money/day = $30/week ÷ 7days/week = 4.28 /day

Daily Budget:
33.33 = transport  + spending money + groceries
33.33 = 20 + 4.28 + groceries           Subtract 24.28 from each side:
9.05 = groceries
$9.05 per day should be spent on groceries, assuming she doesn't want to save any of her income. 

You purchased xyz common shares for $45 per share one year ago. one year later aftering receiving $4 dividend per share, you sold your stock at $48 per share. what is your total return for the one year period?
a. 14.58%
b. 8.89%
c. 15.56%
d. 6.67%

Answers

The return for the investment is C, or 15.56%. You add the dividend and the capital gain, $4+$3=$7, and then divide by the initial investment price, or $45. 7/45=.1556, or 15.56%.

determine whether each equation is a linear equation. write yes or no. if yes, write the equation in standard form. if the answer is no, circle the part that makes it no

1. y = 4 - 2x

Answers

YES. y = 4 - 2x is a linear equation.

the equation in standard form is;

2x + y = 4

hope this helped, God bless!
Final answer:

The given equation y = 4 - 2x is a linear equation, however, it is not in standard form. The standard form is 2x + y = 4.

Explanation:

The equation y = 4 - 2x is indeed a linear equation. A linear equation is an equation that represents a straight line when graphed. It generally has the form 'y = mx + b' where 'm' represents the slope of the line, and 'b' represents the y-intercept. Here, 'm' is -2 and 'b' is 4.

However, it is not currently in standard form. The standard form of a linear equation is 'Ax + By = C', where A, B, and C are integers, and A and B are not both zero. To write the equation in standard form, we can re-arrange it as 2x + y = 4.

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Choose the constant term that completes the perfect square trinomial x 2 - 18x

Answers

The missing term is +81 (halve the x term then square it).

The correct answer should be +18

Find the maximum and minimum values of f(x,y,z)=3x+3y+3zf(x,y,z)=3x+3y+3z on the sphere x2+y2+z2=1x2+y2+z2=1.

Answers

Lagrangian:

[tex]L(x,y,z,\lambda)=3(x+y+z)+\lambda(x^2+y^2+z^2-1)[/tex]

Set partial derivative equal to 0 and look for critical points:

[tex]L_x=3+2\lambda x=0[/tex]
[tex]L_y=3+2\lambda y=0[/tex]
[tex]L_z=3+2\lambda z=0[/tex]
[tex]L_\lambda=x^2+y^2+z^2-1=0[/tex]

[tex]xL_x+yL_y+zL_z=3(x+y+z)+2\lambda(x^2+y^2+z^2)=0[/tex]
[tex]3(x+y+z)+2\lambda=0[/tex]

We require [tex]\lambda\neq0[/tex], so we find that

[tex]L_x-L_y=2\lambda(x-y)=0\implies x=y[/tex]
[tex]L_y-L_z=2\lambda(y-z)=0\implies y=z[/tex]
[tex]L_x-L_z=2\lambda(x-z)=0\implies x=z[/tex]

[tex]3(3x)+2\lambda=9x+2\lambda=0[/tex]

[tex]\begin{cases}9x+2\lambda=0\\3+2\lambda x=0\end{cases}\implies2\lambda=-9x[/tex]
[tex]\implies 3+(-9x)x=3-9x^2=0\implies x=\pm\dfrac1{\sqrt3}[/tex]

which means there are two possible critical points, [tex]\left(\dfrac1{\sqrt3},\dfrac1{\sqrt3},\dfrac1{\sqrt3}\right)[/tex] and [tex]\left(-\dfrac1{\sqrt3},-\dfrac1{\sqrt3},-\dfrac1{\sqrt3}\right)[/tex]. It's clear enough that the first gives a maximum value of [tex]f\left(\dfrac1{\sqrt3},\dfrac1{\sqrt3},\dfrac1{\sqrt3}\right)=3\sqrt3[/tex], and a minimum value of [tex]f\left(-\dfrac1{\sqrt3},-\dfrac1{\sqrt3},-\dfrac1{\sqrt3}\right)=-3\sqrt3[/tex].
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