At a certain bakery, the price of each doughnut is $1.50. Let the random variable D represent the number of doughnuts a typical customer purchases each day. The expected value and variance of the probability distribution of D are 2.6 doughnuts and 3.6 (doughnuts)2 , respectively. Let the random variable P represent the price of the doughnuts that a typical customer purchases each day. Which of the following is the standard deviation, in dollars, of the probability distribution of P ? 1.5(3.6) 1.5(3.6) A 1.53.6−−−√ 1.53.6 B 1.5(3.6)−−−−−−√ 1.5(3.6) C 1.5(2.6) 1.5(2.6) D 1.52.6−−−√ 1.52.6 E

Answers

Answer 1

Answer: C ( square root of 1.5 x 3.6)

Step-by-step explanation:

The price for the variance is 3.6 times 1.5. Standard deviation is the square root of variance, so the answer is the square root of 1.5 x 3.6.

Answer 2

The standard deviation expression of the distribution P is √(1.50 × 3.6)

Given the Parameters :

Expected value = 2.6Variance = 3.6 Price per doughnut = $1.50

The price for the variance of the distribution can be written as :

Price per doughnut × Variance

Variance = $1.50 × 3.6

The standard deviation of the distribution D is related to the variance by the formular :

Standard deviation = √variance

Standard deviation = √(1.50 × 3.6)

Therefore, the standard deviation in $ of P will be √(1.50 × 3.6)

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Related Questions

the ratio of the angles in a triangle is 3:10:7, what is the measure of the smallest angle

Answers

Answer:

27°

Step-by-step explanation:

Let the measure of the angels be 3x, 10x, 7x.

[tex]3x + 10x + 7x = 180 \degree \\ \\ 20x = 180 \degree \\ \\ x = \frac{180 \degree}{20} \\ \\ x = 9 \degree \\ smallest \: angle \: = 3x \\ \\ = 3 \times 9 \degree \\ \\ = 27 \degree[/tex]

What is the missing value in ___x 1/10=0.27

Answers

should be 2.7 ! i got the answer by multiplying 0.27 by 10 to reset the equation kinda

need helppp on this question!!

Answers

I’m pretty sure it would be f(x)= -5/2x-8
You can honestly plug it into a graph yourself or you can get the formula and solve it like that. Unfortunately I do not have the formula on hand. Sorry

^DEF and ^RSQ are shown in the diagram below

Based on the information provided in the diagram, what is mZQ in degrees?

Answers

Answer:

53.3 degrees

Step-by-step explanation:

∆DEF and ∆RSQ are similar. We know this, because the ratio of their corresponding sides are equal. That is:

DE corresponds to RS

EF corresponds to SQ

DF corresponds to RQ.

Also <D corresponds to <R, <E corresponds to <S, and <F corresponds to <Q.

The ratio of their corresponding sides = DE/RS = 6/3 = 2

EG/SQ = 8/4 = 2

DF/RQ = 4/2 = 2.

Since the ratio of their corresponding sides are equal, it means ∆DEF and ∆RSQ are similar.

Therefore, their corresponding angles would be equal.

Thus, m<Q = m<F

Let's find angle F

m<F = 180 - (98 + 28.7)

m<F = 53.3°

Since <F corresponds to <Q, therefore,

m<Q = 53.3°

7-99 Find the missing information in each set of equivalent ratios below, using any method. Be
sure that you record your process so that others can see what you did.
2
15
100
Noo
100
Work for A
37.5
I
Work for B
87.5
0.2
2
х
11.2

Answers

Answer:

21 man

Step-by-step explanation:

u have to do the work and get the answer

What is the area, in square inches, of this kite?
7 in.
5 in.
5 in.
10 in
(pls help)

Answers

Step-by-step explanation:

I think its 85in as the area.

HELP PLEASE I’ll make you brilliant

Answers

Answer:

this is grade what????

Step-by-step explanation:

Complete the proof Prove: angle UWX = angle UWV

Answers

Answer:

Step-by-step explanation:

      Statements                                       Reasons

1). UW bisects ∠VUX                1). Given

2). UW bisects ∠VWX              2). Given

3). ∠VUW = ∠WUX                   3). Definition of angle bisector

4). ∠UWV = ∠UWX                   4). Definition of angle bisector

5). UW = UW                             5). Reflexive property of congruence

6). ΔUWX ≅ ΔUWV                  6). ASA postulate of congruence

PLZZZZZZZZZZZZZZZZZZZZZZ HELP!!!
QUESTION: -2(x-6)=8

STUDENT WORK:
-2(x-6)=8
-2x-12=8
-12 -12
-2x+0=-4
-2x=-4
÷2 ÷2
x=-2



1. Explanation of Errors Made

2. Correct Solution (show all work)

Answers

Answer:

The error was made in the division step it should have been divided by negative 2

-2(x-6)=8

-2x+12=8

-2x=-4

-x=-2

X=2

Help?!
I dont understand this Help?!

Answers

Use the equation form the last question to answer how many it would cost to do 30 hours

What is on way feudal japan was different than feudal Europe???? Not mathematics it is history.

Answers

Maybe the 3rd one...

1. 8x^2 + 10x - 9
2. 3x^4 - 14x^2 - 9
3. 4x^2 + 5x - 9
4. 8x^2 + 10x - 18

Answers

Perimeter is all sides added up
2(3x^2-2x) + 2(x^2+7x-9)
= 6x^2 - 4x + 2x^2 +14x - 18
Simplify
8x^2 + 10x - 18
It would be number 4

Answer:

4.

Step-by-step explanation:

(x^2 + 7x - 9) + (3x^2 - 2x) + (x^2 + 7x - 9) + (3x^2 - 2x)

x^2 + 7x - 9 + 3x^2 - 2x + x^2 + 7x - 9 + 3x^2 - 2x

Rearranging order:

3x^2 + 3x^2 + x^2 + x^2 + 7x + 7x - 2x - 2x - 9 - 9

Combine like terms

8x^2 + 10x - 18

please help!! find the reciprocal of these numbers.
6.2
-2.3
0.9
-22.7

Answers

Answer:

They have its own reciprocal

6.2 will be 0.16 -2.3 will be -0.43 0.9 will be 1.11 and -22.7 will be 0.04. You need to change the decimals into fractions. Flip the fraction and then turn that fraction back into a decimal. I hope this is right!

Find the mean and the median of the data set. 31,32,36,31,30,35,33,30.

Answers

Answer:

Mean = 32.25

median = 31.5

Answer:

Median = 31.5

Mean  = 32.25

Step-by-step explanation:

Number of data = 8

Ascending order:

    30 , 30 , 31 , 31 , 32 ,  33 , 35, 36

Median = Average of 4th and 5th term

             = (31 + 32) / 2

              = 63/2

              = 31.5

Mean = Sum of all the observations /number of observations

         = (31 + 32 + 36 +31 + 30 + 35 + 33 +30) / 8

         = 258/8  

         = 32.25

Which of the expressions are equivalent to the one below? Check all that
apply.
16. (1 + 3)
A. (16. 1) + (3.16)
B. (3 + 1). 16
D C. (16 + 3). 1
D. (161) + (163)

Answers

ok so 16.(1+3) = 16 . 4 = 64 so let's solve them A = (16 . 1) + (3 . 16) .. here it's right because we split the 6 on each number ... if you want a prove solve it (16 . 1 ) + (3 . 16 ) = 64 B = (3+1) . 16 = 4 . 16 = 64C = (16 +3) . 1 = 19 . 1 = 19 D = 161 + 163 = 324

so A & B = 64 .... so yeah right A & B are the correct answers

by the way i multiplied for the "."

Which equation represents this situation?

Charlie worked 1.5 hours less than Dirk. Together, they worked a total of 25 hours. Dirk worked h hours.


h+(h+1.5)=25

h−2.5=25

h+(h−1.5)=25

h−1.5=25

Answers

pretty sure it’s A, sorry if im wrong :)

the term to term rule of a sequence is divide by 2

Answers

(Google Answer)
If the rule is to multiply or divide by a number each time, it is called a geometric sequence. Each number in a ... What is the term to term rule and the next two terms of the sequence: 17, 14, 11, 8, .

pls pls pls help i am terrible at math.
where do the points go?

Answers

Answer:

I presume that 10x would be on the x axis to the right of 0.

-7y would be on the y axis under 0. Therefore in between -6 and -8

You might know this but very important

X to the decks (horizontally/straight across) and Y to the sky (vertically/ up and down)

What is 40x52 To the 7 power

Answers

41,122,868,101,120 would be the answer?

Answer:

168,439,267,742,187,520,000,000

Step-by-step explanation:

40*52=2080

2080^7=168,439,267,742,187,520,000,000

Every 125 pages that Raul reads during his summer reading challenge, he will collect 5 book points to use at his local library. Which graph models a relationship with the same unit rate?

Answers

Answer:

d. J

Step-by-step explanation:

Given that Raul gets 5 (y) book points for every 125 (x) pages he reads during summer challenge, we can say that his unit rate would be: y/x = 5/125 = 1/25.

Raul's unit rate is 1/25 book point to each page he reads.

Graph J also has a unit rate of 1/25 (y/x).

Therefore graph J models a relationship with the same unit rate.

Aarti posted a comment on her blog. Each day the number of responses to her comment was 125% of the number she
received on the previous day. If there were 64 responses the first day, how many were there on the fourth day?
O 100
112
оооо
125
132
Mark this and return
Save and Exit
Next
Submit

Answers

Answer:

125

Step-by-step explanation:

Answer:

125

Step-by-step explanation:

If f(1) = 6 and f(n) = f(n-1) + 2 then find the value of f(4).

Answers

Answer:

5

Step-by-step explanation:

f(4-1)+2

=3+2

=5

PLS GIVE BRAINLIEST

help asap. will give best answer.

Answers

Answer:

neither

Step-by-step explanation:

Based on simple interest, how much money would you have borrowed at 6% annual interest if your interest payment for one year was $120?​

Answers

P is the principal, the $120
R is the rate, 6% changed to .06
N is how often it’s compounded (annually, semiannually, daily, monthly)
T is time, a specific question on how long it took. It can be random, 6 years, 2 years, 12 years, etc.

Cereal. A dietician obtains the amounts of sugar (incentigrams) from 100 centigrams (or 1 gram) in each of 10 differentcereals, including Cheerios, Corn Flakes, Fruit Loops, and 7others. These values are listed below. Is thestandard deviation of those values likely to be a good estimate ofthe standard deviation of the amounts of sugar in each gram ofcereal consumbed by the population of all Americans who eatcereal? Why or why not?

3, 24, 30, 47, 43, 7, 47, 13, 44, 39

Find the range, variance, standard deviation

Answers

Answer:

Range is 44

mean is 29.7

variance is 289.56

standard deviation is 17.016

Step-by-step explanation:

The data given as follows

3, 24, 30, 47, 43, 7, 47,13, 44, 39

Range = maximum - minimum

             = 47 -3 = 44

mean = [tex]\frac{3+24+30+47+43+7+47+13+44+39}{10}[/tex] = 297/10 = 29.7

variance = [tex]\frac{sum xi^2 }{N} - mean^2 }[/tex]

              = 289.56

SD = [tex]\sqrt{variance}[/tex]  = 17.016

The standard deviation of the given data is not a good measure as the range and standard deviation are far apart. The standard deviation gives how the given data is dispersed from the mean or expected value, while the range gives a rough idea of variability of the data.

Instead of handing out candy like a well-adjusted person on Halloween, grumpy, anti-social Professor Sosa decides to stand on top of a 400 ft building and toss candy treats onto the ground below. If he drops a bag of candy corn, how long will it take for it to land on the ground? What will the velocity of the bag be when it hits the ground?

Answers

Answer: The bag of candy corn will take 5 seconds to land on the floor and it will hit it with velocity of 49m/s.

Step-by-step explanation: A free falling object has only Gravitational Force acting on it, so acceleration will be due to gravity, which has magnitude

g = 9.8m/s².

As Professor Sosa drops the bag, its initial velocity and time are 0.

The building has a height of 400ft, so adjusting units: y = 121.92 m and [tex]y_{0}[/tex] = 0.

For this problem, going down will be the positive reference.

Then:

[tex]y=y_{0}+v_{0}t+\frac{g}{2}t^{2}[/tex]

[tex]\Delta y=v_{0}t+\frac{g}{2}t^{2}[/tex]

[tex]121.92=\frac{9.8}{2}t^{2}[/tex]

[tex]t=\sqrt{\frac{121.92*2}{9.8} }[/tex]

t ≈ 5

It will take 5s for the candy corn bag to land on the ground.

Acceleration is the change in velocity per change in time, so:

[tex]g=\frac{\Delta v}{\Delta t}[/tex]

As initial velocity and time are 0 and rearraging it:

v = g.t

v = 9.8*5

v = 49

The bag will hit the ground with velocity of magnitude 49 m/s.

the ratio 60 miles per hour is an example of a ______because it has two measurements having different units of measure
Answers:

1.Annex
2.Rate
3.Unit rate
4.Least common multiple

Answers

Answer:

3. Unit Rate

Step-by-step explanation:

The answer is Unit Rate because it is describing two units of measurements compared to one another.

Select the more effective use of correlative conjunctions to join these sentences.

The manager of the supermarket will help the new employee. The assistant manager may help the employee, too.

A. Neither the manager of the supermarket nor the assistant manager may help the new employee.

B. Both the manager of the supermarket and the assistant manager may help the new employee.


hurry .

Answers

Answer:

b the answer

Step-by-step explanation:

Answer:

Answer is B

Step-by-step explanation:

Estimate 9146 x 174 by first rounding each number so that it has only 1 nonzero digit.

Answers

Answer:

1,800,000

Step-by-step explanation:

9146 * 174

Estimate: 9000 * 200 = 1,800,000

What is the hourly utilization rate of each resource if the bottleneck(s) work nonstop during a 10-hour day?

Answers

Answer:

100%

Step-by-step explanation:

Utilization rate =

Hours worked / total working hours per day

Since the bottle works nonstop during a 10-hour day, it worked 10 hours

Utilization rate in percentage = (10/10)×100%

= 100%

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