Mathematics High School

Use the given information below, find the p-value
a., test statistic z = -1.52

Answers

Answer 1

The p value can simply be located given the value of the z statistic by using a standard normal probabilities distribution table.

 

We are given that the z value of z = - 1.52. Since z is negative this means that we are to look for the proportion or p value located to the left of z. Based on the standard normal probabilities distribution table, this is equivalent to a p value of:

 

p value = 0.0643

 

This given p value indicates that 0.0643 or 6.43% of the population is located to the left of z.

 

Answer:

p value = 0.0643

Related Questions

The box plot shows the total amount of time, in minutes, the students of a class spend reading each day

What information is provided by the box plot?      10 Points

1. The mean for the data

2. The median for that data

3. The number of students who provided information

4. The number of students who read for more than 21.15 minutes

Answers

2. The median for the data is the correct answer

The area of the rectangular playground enclosure at Happy Times Nursery School is 600 meters. The length of the playground is 25 meters longer than the width. Find the dimensions of the playground. Use an algebraic solution.

Answers

 

The solution would be like this for this specific problem:

 

Area = L * W = 600 
Length = W + 25

Substitute and solve for "W":
(W + 25)W = 600


w^2 + 25w - 500 = 0
(w - 15) (w + 40) = 0
Positive solution:
Width = 15 meters
Length = 15 + 25 = 40 meters

 

So, the dimensions of the playground using an algebraic solution is 15 meters by 40 meters.  

To add, the minimum number of coordinates needed to specify any point within it is the informal definition of the dimension of a mathematical space.

Read the following statement: If the sum of two angles is 90°, then the angles are complementary. The hypothesis of the statement is:

there are two angles.
the sum of two angles is 90°.
the angles are complementary.
Angles are complementary if their sum is 90°.

Answers

the angles are complementary is the answer

What is the frequency of the function y = cos5x?

Answers

The given formula is a sinusoidal equation. Sinusoidal equations are trigonometric functions involving sine and cosine functions. Graphically, they look like wave patterns having amplitudes and periods. The general form of a sinusoidal equation is 

y = A cos(Bx + C) + D

where

A = amplitude
B = frequency
C = shift on starting angle
D = shift of wave on the y-axis

Thus, can pattern out that A=1, B=5, C=0 and D=0 in the given equation. The SI unit of frequency is Hertz (Hz) or 1/second. Hence, the frequency of the function is 5 Hz.

Final answer:

The frequency of the function y = cos5x is 5/2π.

Explanation:

The given function is y = cos5x. To find the frequency of this function, we need to determine the coefficient of x in the argument of the cosine function. In this case, the coefficient is 5, which means the argument of the cosine function will complete 5 full cycles in an interval of 2π.

The frequency of a function is the reciprocal of the period. The period is found by dividing 2π by the coefficient of x. So, the period of the given function is 2π/5, and the frequency is the reciprocal of the period, which is 5/2π.

Therefore, the frequency of the function y = cos5x is 5/2π.

Betty has 10 more dimes than quarters. If she has $3.45, how many coins does she have?

Answers

d = dimes

q = quarters

d=10+q

0.25q +0.10d = 3.45

0.25q + 0.10(10+q) = 3.45

0.25q + 1 +0.10q =3.45

0.35q=2.45

q = 2.45/0.35 = 7

d = 10+7 =17

0.25*7=1.75, 17*0.10 = 1.70, 1.75+1.70 = 3.45

she has 7 quarters and 17 dimes for a total of 24 coins

Hey, really need help with this question, thanks. Find the derivative of f(x) = -10/x at x = -12.

Answers

f(x)=-10/x

The rule for the derivative of a quotient is

if f(x)=g(x)/h(x)

df/dx=((dg/dx)*h(x)-(dh/dx)*g(x))/(h(x))^2

In this case:

df/dx=(-1(-10))/x^2

df/dx=10/x^2, so df/dx(-12)

df/dx(-12)=10/(-12)^2

df/dx(-12)=10/144

df/dx(-12)=5/72

Write an equation for the line perpendicular to 2x−3y = 5 and containing (−2, 1).

Answers

 

Hello:
the equation is : y = ax+b
the slope is a : a×(2/3) = -1......( perpendicular to a line : 2x-3y =7 with a slope of 2/3 because : y = (2/3)x-7/3)
a = -3/2         y=(-3/2)x+b
the line that passes through (-2, 1) : 1 = (-3/2)(-2)+b
b = -2
 the equation is :  y  = (-3/2)x-2

The sum of three consecutive odd integers is 69. find the integers

Answers

Let the integers be x-2, x, x+2.

Given,

x -2 + x + x + 2 = 69

3x = 69

x = 23

Hence, the integers are 21, 23 and 25.

Solve the equation.

12 + 0.35x = 20.05
A. 91.5
B. 57.3
C. 2.8175
D. 23

Answers

The answer is D.) 23. First you subtract 12 from both sides of the equation. You will get 0.35x=8.05. Then you divide both sides by 0.35 to get x=23.

What is the length of side PQ?

Answers

64; Line pq is correspondent with line ab and triangle PQR is 4 time as big as triangle ABC.

Answer: The length of PQ = 64

Step-by-step explanation:

We are given that ΔPQR and ΔABC are similar right triangles .

Since, we know that the corresponding sides of similar triangles are proportional.

Therefore, we get

[tex]\dfrac{PQ}{AB}=\dfrac{QR}{BC}\\\\\Rightarrow\dfrac{PQ}{16}=\dfrac{80}{20}\\\\\Rightarrow\ PQ=4\times16\\\\\Rightarrow\ PQ=64[/tex]

Hence, the length of side PQ = 64 units

Given the declaration, where is the value 97 stored in the numbers array? int numbers[]={83, 62, 77, 97, 88};

Answers

Let me help you!

Ok, so before I give you the answer, which is very simple, I will first show you how to answer questions like this in the future.

In the variable declaration, the array "numbers[]" has been declared as an integer. The values of the array "numbers[]" are: 83, 62, 77, 97, 88; respectively, the values are equivalent to: 0, 1, 2, 3, 4 which makes the range of array "numbers[]": 5.

To make it clearer:
numbers[0] = 83
numbers[1] = 62
numbers[2] = 77
numbers[3] = 97 <---- This is what we are looking for!
numbers[4] = 88

*** By the way, when counting the range, we don't start at 1, we start at 0. That's why even if the range is 5, the last value is 4.

Therefore, the answer is: 3 or numbers[3].

how to express -8+4-2+1 in sigma notation

Answers

It's pretty clear what the pattern is - 2^(k-1) * (-1)^(k-1) would work backwards, but we have to work forwards to get lower in this case, so we could start at -3 (as long as we put the k-1 in absolute value to make sure it's not 1/8), so we could write it as ∑ (k=1, goes to 4) 2^(|k-4|)*(-1)^(k-4) 

It doesn't matter for k-4 because 1/-1 and 1/1 are the same thing as -1 and 1 respectively

A woman entering an outside glass elevator on the ground floor of a hotel glances up to the top of the building across the street and notices that the angle of elevation is 51°. she rides the elevator up three floors (60 feet) and finds that the angle of elevation to the top of the building across the street is 34°. how tall is the building across the street? (round to the nearest foot.)

Answers

Final answer:

Using trigonometric functions, specifically the tangent function, we create two equations corresponding to two right triangles formed by the lines of sight from the ground floor and from 60 feet high in the elevator. Solving those equations simultaneously, we can calculate that the height of the building across the street is approximately 149 feet.

Explanation:

This is a trigonometry problem where we're going to establish two right triangles with the elevator as one side, the building across the street as another (the one we're trying to find), and the line of sight as the hypotenuse. From the ground, we form a triangle with the angle of elevation of 51 degrees. Then from 60 feet above the ground, we form another triangle with an angle of elevation of 34 degrees.

Here, we apply tangent of an angle which equals the opposite over adjacent sides in a right triangle. So, we get tan(51) = h/x and tan(34) = (h-60)/x. We have two unknowns here: 'h' which is the height of the building and 'x' the distance from the elevator to the building. Solving these equations simultaneously, we can find 'h'.

If we solve these equations, we'll get 'h' equals approximately 149 feet (rounding to the nearest foot). So, the building across the street is around 149 feet tall.

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What is the cost of constructing a fence 6 and a half feet (6'6") high around a lot measuring 90 ft by 175 ft; if the cost of erecting the fence is $1.25 per linear ft and the cost of materials is $.825 per square ft?

Answers

Final answer:

To construct a fence around a 90 ft by 175 ft lot at $1.25 per linear foot and $.825 per square foot for materials, it would cost a total of $13,656.25.

Explanation:

To calculate the cost of constructing a fence for a lot that measures 90 ft by 175 ft with a fence height of 6'6" (6.5 ft), we need to determine both the perimeter of the lot for the linear feet cost and the total area for the material cost per square foot.

The perimeter of the lot is 2*(90 + 175) = 2*265 = 530 feet. So, the cost of erecting the fence at $1.25 per linear ft is 530 ft * $1.25/ft = $662.50.

The total area that needs to be fenced is 90 ft * 175 ft = 15,750 square feet. Thus, the cost of materials at $.825 per square ft is 15,750 sq ft * $0.825/sq ft = $12,993.75.

The total cost of constructing the fence is the sum of the cost of erecting the fence and the cost of materials, which adds up to $662.50 + $12,993.75 = $13,656.25.

the volume of pyramid shown above is 147.97units and the height is is 9.6 units find the length of one edge of the square base

Answers

The formula fro the volume of a pyramid with a square base is:
Volume = L * L * H / 3
L * L * 9.6 / 3 = 147.97
L * L = (3 * 147.97) / 9.6
L * L = 46.24
Let's take the square root of both sides.
L = sqrt(46.24) = 6.8
The length of one edge of the square base is 6.8 units.

Solve for x: 15x2 = x+2

x2 is x to the second power

Answers

Greeting!

15x² = x + 2
15x² - x -2= 0
Factor left side
(5x-2)(3x+1)=0
Set factors equal to 0
5x - 2 = 0 or 3x + 1 -0
x = 2/5 or x= -1/3

I hope that helps!

Brainlest answer :)

A room measures 12 feet by 12 feet. A couch is 10 feet and 6 inches long. If you center the couch in the middle of the room, how far will each end of the couch be from the nearest wall?

Answers

12(12)/2-(10(12)+6)/2

72-63

9"

So the ends of the couch will be 9 inches away from the wall closest to that end.

Final answer:

To determine the distance from the ends of the couch to the nearest wall, convert all measurements to inches, find the difference between the room and couch lengths, and divide by two. The ends of the couch will be 0.75 feet or 9 inches from the nearest wall.

Explanation:

The question involves determining the distance from the ends of a couch to the nearest wall when the couch is centered in a 12 feet by 12 feet room. The couch is 10 feet and 6 inches long.

To solve this, first convert the couch length to inches. 10 feet is 120 inches, and adding 6 inches gives us a total of 126 inches for the couch length. Since 1 foot equals 12 inches, the room's length in inches is 12 feet times 12 inches per foot, which equals 144 inches.

Now, to find the distance from each end of the couch to the nearest wall, we subtract the couch length from the room's length:

Room's length in inches: 144 inchesCouch length in inches: 126 inchesDifference: 144 inches - 126 inches = 18 inches

Divide the difference by 2 to get the distance from each end of the couch to the wall:

Distance from each end to the wall: 18 inches / 2 = 9 inches

Finally, convert this distance back to feet:

9 inches / 12 inches per foot = 0.75 feet, or 9 inches

Therefore, each end of the couch will be 0.75 feet, or 9 inches, from the nearest wall when the couch is centered in the room.

Factor: 24x^3−81

x^3 is x to the third power

Answers

Hi again!

24x³ - 81

= 3(2x -3)(4x²+6x+9)


I hope that helps!

Please Brainliest answer :)

Find the missing terms in the following geometric sequence.


a.48, 162c.96, 192b.116, 220d.36, 108    

Answers

The answer is D. The action taken between each number is multiplying by 3. With this question, I'd say an easy way to answer it is to look at each answer given (in this case 36 and 108) and see if it fits the sequence with the given values (12 and 324).

Simplify completely quantity 6 x minus 12 over 10.

Answers

(6x-12)/10  factor out 2

2(3x-6)/(2(5))

(3x-6)/5  and you can factor out 3 from the numerator too

3(x-2)/5  which can be expressed as:

0.6(x-2)

Answer:

3(x+12)

-----------

10

(three times x plus twelve OVER ten)

Step-by-step explanation:

We flip three coins and obtain more tails than heads. Write the event as a set of outcomes.

Answers

All Outcomes in flipping 3 coins:
Sample space of all outcomes
= {HHH,THH, HTH, HHT, TTT, HTT, THT, TTH} = 8 =All possible outcomes

Sample space of all favorable outcomes (more tails than heads)
= {TTT, HTT, THT, TTH} = 4 = All favorable outcome

The set of outcomes is {HHH, THH, HTH, HHT, TTT, HTT, THT, TTH}. The total number is 8.

What is probability?

Probability is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.

Probability = Number of favorable outcomes / Number of sample

All outcomes in flipping 3 coins then the number of samples will be:-

Sample space of all outcomes

Sample space = {HHH,THH, HTH, HHT, TTT, HTT, THT, TTH} = 8 =All possible outcomes.

Sample space of all favorable outcomes (more tails than heads)

Favourable outcomes= {TTT, HTT, THT, TTH} = 4 = All favorable outcome.

Therefore, the set of outcomes is {HHH, THH, HTH, HHT, TTT, HTT, THT, TTH}. The total number is 8.

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100 point reward with certified answer. 4 basic algebra questions, must show work. If the answers are wrong your response will be deleted and the points taken back. Good luck!

Answers

y=kx
12=-4k
  k = -3

so when y = 15
y = kx
15 = -3x
  x = -5

----------------

$50 / 0.04 = $1250 (4% interest)

so
1250 * 0.06 = $75

answer
interest $75 at 6%

-----------------------------

y = kx
1/4 = 4k
k = 1/16

when x = 5
y = kx
y = 1/16(5)
y = 5/16 

-----------
y = kx
-5 = 4k
k = -5/4

direct equation
y = -5/4x

you spend $124.00 shopping, but the store is offering a 30% discount. what is the total cost after the discount? round to the nearest cent

Answers

If it is 30% off, we are looking for 70% of $124.

To find this, multiply 124 by the decimal form of 70%.

124*0.7=86.8

Final answer: $86.80

In a zoo, there are 3 male penguins for every 4 female penguins. What is the ratio of females to the total number of penguins at the zoo? 4 to 7 3 to 7 4 to 3 4 to 1

Answers

4 to 7 because the total is 28 and females is 16. 16:28 simplified is 4:7

Final answer:

The correct answer is a ratio of 4 to 7, representing the ratio of female penguins to the total number of penguins in the zoo.

Explanation:

We're given that there are 3 male penguins for every 4 female penguins in a zoo.

To find the ratio of females to the total number of penguins, we first have to add up the total number of penguins, which is 3 males + 4 females = 7 penguins in total.

Now, we can express the ratio of females to the total number of penguins. There are 4 females out of 7 total penguins, so the ratio is 4 females to 7 penguins in total.

Therefore, the correct answer to the student's question is 4 to 7.

What is sum of the area under the standard normal curve to the left of z = -1 and to the right og z = 1.25?

Answers

From standard tables, the area to the left of z = -1 is
A₁ = 0.1587

The area to the left of z = 1.25 is
A₂ = 0.8944
Therefore the area to the right of z = 1.25 is
1 - A₂ = 0.1056

The sum of the areas to the left of z = -1 and to the right of z = 1.25 is
0.1587 + 0.1056 = 0.2643

Answer:  0.2643

Find the coordinates of the circumcenter for ∆DEF with coordinates D(1,1) E (7,1) and F(1,5). Show your work

Answers

Draw an accurate picture of the points in the coordinate axis, as shown in the figure.

D, F have equal x coordinate, so DF is perpendicular to the x-axis.
D, E have equal x coordinate, so DE is perpendicular to the y-axis.

this means DF and DE are perpendicular, so DEF is a right triangle, with m(D)=90°.

Let A be the midpoint of DF. The x coordinate of A is 1 and the y coordinate can be found as follows:

subtract the y coordinate of D from the y coordinate of F, that is 5-1=4.
Divide by 2 and add to the y coordinate of D, that is 4/2+1=2+1=3 is the y coordinate of A.

Let B be the midpoint of DE, follow the previous procedure to find the coordinates of B.

A(1, 3) and B(4, 1).

draw the perpendicular through A and the perpendicular through B, thet meet at point C(4, 3), which is the circumcenter.



Answer: C(4, 3)

what is the difference of m and 7 increased by 15

Answers

(m - 7) + 15 <== ur expression

The expression which represents a difference of m and 7 increased by 15 will be (m - 7) + 15.

What is an expression?

A mixture of variables, numbers, addition, subtraction, multiplication, and division are called expressions.

An expression is a mathematical proof of the equality of two mathematical expressions.

A statement expressing the equality of two mathematical expressions is known as an equation.

The difference between m and 7 is

m - 7

Increased also referred for addition so

Increased by 15 is ( m - 7) + 15

Hence "The expression which represents a difference of m and 7 increased by 15 will be (m - 7) + 15".

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At a particular music store, CDs are on sale at $13.00 for the first one purchased and $10.00 for each additional disc purchased. Maria spends $83.00 on CDs. How many CDs has Maria purchased

Answers

D=Disc
13+10d=83
10d=83-13
10d=70
D=70/10
D=7
7+1=8
Maria purchased 8 CDs. Hope this helps!

Answer:

Maria purchased total 8 CDs.

Step-by-step explanation:

At a particular music store, CDs are on sale at $13.00 for the first one purchased and $10.00 for each additional disc purchased.

Maria spends = $83.00

She purchased her first CD for = $13.00

Now balance of her charge = 83.00 - 13.00 = $70.00

other CDs are purchased for $10.00

Therefore, 70.00 ÷ 10.00 = 7 CDs

Total CDs = 7 + 1 = 8 CDs

Maria purchased total 8 CDs.

The coordinates of quadrilateral PQRS are P(0, 0), Q(a + c, 0), R(2a + c, b), and S(a, b). How can you use coordinate geometry to show that one pair of opposite sides is parallel?

Answers

We will use the formula for the slope:
m = ( y2- y1 ) / ( x2 - x1 )
For PQ : m = ( 0 - 0 ) / ( a + c - 0 ) = 0
For RS : m = ( b - b ) / ( a - ( 2a + c )) = 0
Both slopes are m = 0, so PQ and RS are parallel to x - axis and at the same time parallel to each other ( PQ | | RS ). One pair of opposite sides is parallel.

Answer:

 

Apply the Distance Formula to show that opposite sides pq and rs are congruent

Three consecutive integers have a sum of 234. What are the three integers?

Answers

x+x+1+x+2 = 234
3x + 3 = 234
3x = 231
x = 77

so Three consecutive integers: 77,78,79

double check
77+78+79=234
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