The time at which the mailman delivers the mail to ace bike shop follows a normal distribution with mean 2:00 pm and standard deviation of 15 minutes.

Answers

Answer 1

There are three questions related to this problem.


First, the probability of the mail will arrive after 2:30 PM


Find the z-score of 2:30 which is 30 minutes after 2:00.


z(2:30) = (2:30 – 2:00)/15 = -30/15 = -2


P(x < 2:30) = P(z<-2) = 0.0228


Second, the probability of the mail will arrive at 1:36 PM

Find the z-score of 1:36 which is 24 minutes before 2:00.


z(1:36) = (1:36 – 2:00)/15 = -24/15 = -1.6


P(x < 1:36) = P(z<-1.6) = 0.0548

 

Lastly, the probability of the mail will arrive between 1:48 PM and 2:09 PM


Find the z-score of 1:46 and 2:09 PM which will result to a z value of 0.034599


P(1:48 < x < 2:09) = P(z<0.034599) = 0.5138


Related Questions

what is the distance between points A and B?

Answers

I suppose it would be 5 units

Carlie works at a bakery making bagels and donuts. the oven timer for the donuts buzzes every 30 minutes, and the timer for the bagels buzzes every 40 minutes. if she started both timers at 8:00
a.m., when will the timers buzz at the same time?

Answers

This will be the Lowest common multiple of 30 and 40  

which is 120 minutes  so the time when they will buzz together is 8:00 + 120/60  = 10.00 am
Final answer:

The donut and bagel timers at Carlie's bakery will buzz together every 2 hours, so they will buzz at the same time for the first time at 10:00 a.m.

Explanation:

This question is about finding the Least Common Multiple (LCM) of the two numbers - 30 minutes (the time the donut timer buzzes) and 40 minutes (the time the bagel timer buzzes). The LCM of 30 and 40 is 120 minutes. This means that the timers for the bagels and the donuts will buzz at the same time every 120 minutes, or 2 hours. Since Carlie starts both timers at 8:00 a.m., the timers will buzz together for the first time at 10:00 a.m.

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y and x have a proportional relationship, and y = 15 when x = 3. What is the value of x when y = 4?

Answers

I think it would be 20!!
Hope it helps!

Answer: 0.12

Step-by-step explanation:

If c – 8 is an odd integer, which of the following could be the value of c?

Answers

Final answer:

If c – 8 is an odd integer, then c could be any even number greater than 8 such as 10, 12, 14, 16, because when you subtract 8 from these even numbers, the result is an odd integer.

Explanation:

The question requires us to find the value of c if c : 8 is an odd integer. So, if c : 8 is an odd integer, that means whatever number c is, when you subtract 8 from it, you should get an odd number. Odd numbers are integers that are not divisible by 2 and they usually end in 1, 3, 5, 7, or 9. Therefore, the possible values for c can be any even number greater than 8, such as 10, 12, 14, 16, and so on. That's because when you subtract 8 from these even numbers, the result will be an odd integer.

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I want to test for symmetry when theta=pi-theta...........r=4cos 2theta

Answers

[tex]\bf \textit{symmetry test with respect to the }\theta =\frac{\pi }{2}~line \\\\\\ r=4cos(2\theta )\implies r=4cos[2(\pi -\theta )]\implies r=4cos(2\pi -2\theta )\\\\ -------------------------------[/tex]

[tex]\bf cos(2\pi -2\theta )\implies \stackrel{1}{cos(2\pi )}cos(2\theta )+\stackrel{0}{sin(2\pi )}\stackrel{}{sin(2\theta ) } \\\\\\ 1\cdot cos(2\theta )+0\cdot sin(2\theta )\implies cos(2\theta )+0\implies cos(2\theta )\\\\ -------------------------------\\\\ r=4cos(2\theta )\impliedby \textit{is symmetric with respect to }\theta =\frac{\pi }{2}~line[/tex]

gwen borrows $300 from her parents to buy a bike she agrees to pay them back plus 3% intrest over year write an equation to represent the total amount she owes her parents? what is the total amount she will owe her parents?

Answers

Just put at t the year because you didnt specify after what period of time..

Gwen will owe her parents a total of $309.

To represent the total amount Gwen owes her parents after borrowing $300 with 3% interest over a year, we can use the formula for simple interest:

[tex]\[ \text{Total amount} = \text{Principal} + \text{Interest} \][/tex]

Given:

Principal (P) = $300

Interest rate (r) = 3% or 0.03 (as a decimal)

Time (t) = 1 year

Now, plug the values into the formula:

[tex]\[ \text{Interest} = P \times r \times t \][/tex]

[tex]\[ \text{Interest} = 300 \times 0.03 \times 1 \][/tex]

[tex]\[ \text{Interest} = 9 \][/tex]

Now, add the interest to the principal to get the total amount:

[tex]\[ \text{Total amount} = 300 + 9 \][/tex]

[tex]\[ \text{Total amount} = \$309 \][/tex]

So, the equation to represent the total amount Gwen owes her parents is:

[tex]\[ \text{Total amount} = 300 + 300 \times 0.03 \times 1 \][/tex]

[tex]\[ \text{Total amount} = 300 + 9 \][/tex]

[tex]\[ \text{Total amount} = \$309 \][/tex]

Therefore, Gwen will owe her parents a total of $309.

The sum of eight and a number is one hundred. What is the number?

Answers

8 + x = 100
x = 100 - 8
x = 92 <== ur number
Salutations!

Let the number be [tex]x[/tex]

Your equation would be [tex]x+8=100[/tex]

Now that we have our equation, lets solve this!

Solve this by keeping the variables aside, and the numbers aside

[tex]x=100 -8[/tex]

The sign would change because your are isolating the number

[tex]x=100-8[/tex]

[tex]x= 92[/tex]

Hope I helped (:

Have a great day!

At 3 p.m. an oil tanker traveling west in the ocean at 14 kilometers per hour passes the same spot as a luxury liner that arrived at the same spot at 2 p.m. while traveling north at 16 kilometers per hour. if the "spot" is represented by the origin, find the location of the oil tanker and the location of the luxury liner t hours after 2 p.m. then find the distance d between the oil tanker and the luxury liner at that time.

Answers

Follow below steps:

The location of the oil tanker and the luxury liner at time t hours after 2 p.m.:

The oil tanker's location: (-14t, 0)

The luxury liner's location: (0, 16t)

The distance d between the oil tanker and the luxury liner at time t:

The distance formula = √((-14t - 0)^2 + (0 - 16t)^2) = √(196t^2 + 256t^2) = √(452t^2) = 2√(113)t

The distance d between the oil tanker and the luxury liner at that time is [tex]\( \sqrt{452} \cdot t \)[/tex] kilometers.

To solve this problem, we'll use the concepts of distance, speed, and coordinate geometry.

Let ( t ) be the number of hours after 2 p.m.

Location of the Oil Tanker:

At ( t ) hours after 2 p.m., the oil tanker has traveled ( 14t ) kilometers west from the origin.

So, its location is  (-14t, 0) .

Location of the Luxury Liner:*

At ( t ) hours after 2 p.m., the luxury liner has traveled ( 16t ) kilometers north from the origin.

So, its location is  (0, 16t).

Distance between the Oil Tanker and the Luxury Liner:

We'll use the distance formula: [tex]\( d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} \).[/tex]

[tex]\[ d = \sqrt{(-14t - 0)^2 + (0 - 16t)^2} \][/tex]

[tex]\[ d = \sqrt{(-14t)^2 + (-16t)^2} \][/tex]

[tex]\[ d = \sqrt{196t^2 + 256t^2} \][/tex]

[tex]\[ d = \sqrt{452t^2} \][/tex]

[tex]\[ d = \sqrt{452} \cdot t \][/tex]

So, the location of the oil tanker is [tex]\( (-14t, 0) \)[/tex], the location of the luxury liner is [tex]\( (0, 16t) \)[/tex], and the distance between them at ( t ) hours after 2 p.m. is [tex]\( \sqrt{452} \cdot t \)[/tex] kilometers.

A certain breed of mouse was introduced onto a small island with an initial population of 320 mice, and scientists estimate that the mouse population is doubling every year. (a) find a function that models the number of mice m after t years.

Answers

y=2x+320
x being the number of years and 320 being the initial population of mice

Use spherical coordinates. evaluate (x2 + y2) dv e , where e lies between the spheres x2 + y2 + z2 = 1 and x2 + y2 + z2 = 25.

Answers

[tex]\begin{cases}x(\rho,\theta,\varphi)=\rho\cos\theta\sin\varphi\\y(\rho,\theta,\varphi)=\rho\sin\theta\sin\varphi\\z(\rho,\theta,\varphi)=\rho\cos\varphi\end{cases}\implies\mathrm dV=\mathrm dx\,\mathrm dy\,\mathrm dz=\rho^2\sin\varphi\,\mathrm d\rho\,\mathrm d\theta\,\mathrm d\varphi[/tex]

[tex]x^2+y^2=\rho^2\cos^2\theta\sin^2\varphi+\rho^2\sin^2\theta\sin^2\varphi=\rho^2\sin^2\varphi[/tex]

[tex]\displaystyle\iiint_E(x^2+y^2)\,\mathrm dV=\int_{\varphi=0}^{\varphi=\pi}\int_{\theta=0}^{\theta=2\pi}\int_{\rho=1}^{\rho=5}\rho^4\sin^3\varphi\,\mathrm d\rho\,\mathrm d\theta\,\mathrm d\varphi[/tex]
[tex]=\displaystyle2\pi\left(\int_{\varphi=0}^{\varphi=\pi}\sin^3\varphi\,\mathrm d\varphi\right)\left(\int_{\rho=1}^{\rho=5}\rho^4\,\mathrm d\rho\right)[/tex]
[tex]=\dfrac{24992\pi}{15}[/tex]

To solve this problem, it is necessary determine the integrations limits first.

The solution is:

V = 1666,13×π vol units

In order to express the information in spherical coordinates, we have:

x = ρ×cosθ×sinφ

y = ρ×sinθ×sinφ

z = ρ×cosφ

and     dV = ρ²×sinφ×dρ×dθ×dφ

0 ≤ φ ≤ π

0 ≤ θ ≤ 2×π

x² + y² + z² = 25       and         x² + y² + z² = 1    are two concentric spheres with center at the origin and radius 5 and 1 respectevely .

According to that:

1 ≤  ρ ≤ 5

V = ∫∫∫ ( x² + y² )× dV  

V  =   ∫∫∫ ( x² + y² )×ρ²×sinφ×dρ×dθ×dφ

V =  ∫∫∫ (  ρ²×cos²θ×sin²φ  + ρ²×sin²θ×sin²φ ) ×ρ²×sinφ×dρ×dθ×dφ

V =  ∫∫∫ [  ρ²×sin²φ ( cos²θ + sin²θ )  ×ρ²×sinφ×dρ×dθ×dφ

V =  ∫∫∫ [  ρ²×sin²φ×ρ²×sinφ×dρ×dθ×dφ

V =  ∫∫∫ [ ρ⁴×sin³φ×dρ×dθ×dφ

V =  ∫₁⁵ρ⁴×dρ ×∫dθ ×∫sin³φ×dφ

V =  ρ⁵/5 |₁⁵×∫dθ ×∫sin³φ×dφ

ρ⁵/5 |₁⁵  = 5⁵/5 - 1⁵/5   = 3125 / 5 - 1/5  = 3124/5

V = 3124/5× θ |₀²π×∫sin³φ×dφ

θ |₀²π  = 2×π - 0

V = 3124/5× (2×π) ×∫sin³φ×dφ

∫sin³φ×dφ  [ 0  y π ] = 4/3   (from Simbolab)

V = 3124/5× (2×π) ×4/3

V = 1666,13×π   vol units

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Write the slope intercept form of the equation of each line algebra 1

Answers

Consider the linear function that is represented by the equation y=-10x+6 and the linear function that is represented by the equation y-36=8(x-4). Which statement is correct regarding their slopes and y-intercepts?

a. The function that is represented by the equation y=-10x+6 has a steeper slope and a greater y-intercept.

b. The function that is represented by the equation y=-10x+6 has a steeper slope, and the function that is represented by the equation y-36=8(x-4) has a greater y-intercept.

c. The function that is represented by the equation y-36=8(x-4) has a steeper slope, and the function that is represented by the equation y=-10x+6 has a greater y-intercept.

d. The function that is represented by the equation y-36=8(x-4) has a steeper slope and a greater y-intercept.

4 different math books, 6 different physics books and 2 different chemistry books are to be arranged on a shelf. how many different arrangements are possible if

Answers

Hello There!

To find the total number of possibilities just multiply the number of items:
4 x 6 x 2 = 48.
There are 48 different arrangements possible.

Hope This Helps You!
Good Luck :) 

- Hannah ❤

Jill wants to put 45 sunflower seeds, 81 corn plants, and

63 tomato plants in her garden. If she puts the same

number of plants in each row and if each row as only

one type of plant, what is the greatest number of plants

that Jill can put in one row?

Answers

It wont go evenly because if you add them up the total is 189 and that is an odd number.
She can put 9 in her garden

i have a 5 in my ones place the digit in my tens place is 3 plus the digit in my ones place the digit in hundreds place is 2 less than the digit in my ones place what number am i

Answers

385. The 5 is in the ones place. To get the number for the tens place, add together 3+5=8 (5 is the number that is in the ones place). To get the number for the hundreds place, (5) is in the ones place so you would subtract 2 from 5 which is 3. The answer is 385.

Given the triangle below which of the follwing is a correct statement?

Answers

Let Opp Adj, and Hypp respectively represent the opposite side, the adjacent side, and the hypotenuse.

Consider an angle M with measure m degrees. The trigonometric ratios sec, and csc are defined as follows:

sec(m)=Hyp/Adj,     and csc(m)=Hyp/Opp


Thus we can check that 

[tex]\displaystyle{csc(\angle C)= \frac{6}{4}= \frac{3}{2} [/tex]

[tex]\displaystyle{sec(\angle C)= \frac{6}{5} [/tex]

[tex]\displaystyle{csc(\angle B)= \frac{6}{5}= \frac{3}{2} [/tex]

[tex]\displaystyle{sec(\angle C)= \frac{6}{4}=\frac{3}{2} [/tex]


Answer: A

Show how to equate

- 15 + 12.8

Answers

how to equate: to add 12.8 to -15 subtract 12.8 from 15

15-12.8 =2.2

 since 15 is negative and is larger than 12.8 the answer would be negative so 2.2 becomes -2.2

-15 + 12.8 = -2.2


-15 + 12.8 equates to -2.2 by subtracting the smaller absolute value from the larger one and considering the sign of the number with the larger absolute value. The solution involves basic arithmetic with negative and positive numbers.

Solving the Equation -15 + 12.8

To solve the equation -15 + 12.8, follow these steps:

Consider the two numbers: -15 (a negative integer) and 12.8 (a positive decimal).When adding a positive number to a negative number, subtract the smaller absolute value from the larger absolute value.The absolute values are: |12.8| = 12.8 and |-15| = 15. So, subtract 12.8 from 15.15 - 12.8 = 2.2Since the larger absolute value is from the negative number (-15), the result will be negative.Therefore, the solution is -2.2.

So, -15 + 12.8 equates to -2.2.

A rectangle has a base of 2 yd and a height of 5 ft. Find the area of the rectangle. 30 yd2 30 ft2 10 yd2 10 ft2

Answers

Answer: [tex]30\ ft^2[/tex]

Step-by-step explanation:

We are given that

The base of the rectangle = 2 yards

The height of the rectangle = 5 feet

We know that

1 yard = 3 feet

Then , the base of the rectangle = [tex]2 \times3=6\text{ feet}[/tex]

Now, the are of the rectangle will be :-

[tex]\text{Area}=\text{Height x Base}\\\\\Rightarrow\ \text{Area}=5\times6\text{ square feet}\\\\\text{Area}= 30\text{ square feet}[/tex]

Hence, the area of the rectangle = [tex]30\ ft^2[/tex]

Answer:

i think is 30ft2

Step-by-step explanation:

1. How much heat is absorbed by a 50g iron skillet when its temperature rises from 10oC to 124oC? Joules

2. If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 492J of energy to the room? Joules

3. How much heat is needed to raise the temperature of 45g of water by 63oC? Joules

Answers

1. How much heat is absorbed by a 50g iron skillet when its temperature rises from 10oC to 124oC? Joules

Formula: Heat = mass * specific heat * ΔT

Data:
mass = 50 g = 0.050 kg
specific heat of iron = 450 J/ kg °C
ΔT = 124°C - 10°C ¿ 114 °C

=> heat = 0.050kg * 450 J / kg°C * 114°C ≈ 2.6 J

2. If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 492J of energy to the room? Joules

The firs law of thermodynamics is conservation of energy => energy removed from inside of the refrigerator = energy released to the room

=> Answer = 492 J

3. How much heat is needed to raise the temperature of 45g of water by 63oC? Joules

Formula: heat = mass * specific heat * ΔT

specific heat of water = 4186 J / Kg °C

heat = 0.045 kg * 4186 J/kg °C * 63°C = 11,867.31 J

What is fifteen out of eighteen in simplest form

Answers

15/18.. both are divisible by 3 so therefore you can reduce the fraction to 5/6
15/18 = 5/6

15/3 = 5
18/3 = 6

5/6 is your answer

hope this helps

Estimate the product of 75x5

Answers

i would estimate that it would be like 370 or like 780 some where in there 

i hope u have a great rest to ur day or nite :)

Answer:

375

Step-by-step explanation:

Evaluate a/b for a = 1/2 and b = -3/7
Answers:
3/14
-32/21
-3/14
-7/6

Answers

1/2 ÷ -3/7 = -7/6 The answer is -7/6

A scatter plot is used to visualize the association between two quantitative variables tru false

Answers

That would definitely be true.

(-5)(2)-2(-3)+3
Expression
Perform Multiplication
Simplify

Answers

(-10) + 6 + 3
-4 + 3
-1

29,141 write in expanded form

Answers

twenty-nine thousand, one hundred and forty-one

Judy thought of a number, subtracted 11 from it, divided the result by 8 and then added seven to it and got an answer of 10. What is Judy's number?

Answers

10+7=17
17 * 8=136
136+ 11= 147

Dan is calculating the volume of two cylinders. Cylinder A has a radius of 2 feet and a height of 4 feet. Cylinder B also has a height of 4 feet, but the radius has been doubled. Which statement best describes the relationship between the volumes of the two cylinders?

Answers

Cylinder 'B' is twice the size of Cylinder 'A'

cylinder B is 4 times the size of A

Write 2.1111111 as a mixed number

Answers

.11111... = 1/9
2.0 = 2
2 1/9 is your answer

387,422 rounded to the nearest hundred thousand

Answers

387,422 rounded to the nearest hundred thousand is 400,000

hope this helps

The model was shaded two different ways to show a product. Which product is shown by the model?

Answers

the answers would be C

Answer:

3/4.

Step-by-step explanation:

4/8 simplified=1/2 6/8 simplified=3/4.

A town has two high schools. The town has only one baseball field. There are 1,000 seats available for students to watch baseball games. All of the 10th grade students at both high schools want to attend a game. The greatest percentage of 10th grade students who will have a seat is

Answers

The answer of this is = 97%
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