Module 7: Calculating Mean and Varianceof a Discrete Random Variable Statistics and Probability Book: Lesson 1.3 The Mean and Standard Deviation of a Discrete Random Variable p. 10-15 A.What's More Independent Activity 1: Study and analyze The number of shoes sold per day at a retail store is shown in the table below. Illustrate the mean, variance, and standard deviation of this distribution. 19 20 21 22 23 P(X) 0+0.2 0.2 0.1 0.1

Q: Consider the multiple angle equation sin(30) 2 a) Find all the solutions of the equation. Let k be…

A: We know that--> if  sin θ = sin ∝  then the general solution is  θ = nπ + (-1)n ∝…

Q: I cannot see the answer for letter b

A: Sample size (n) = 10 Probability(p) = 0.69

Q: both answers are only partly right

A: As per company guidelines only one question is allowed to answer for multiple question posted.…

Q: This doesn't quite answer the question of whether it's true or not.

A: This doesn't quite answer the question of whether it's true or not.

Q: Why I cannot find that answer? Can you label the answer out?

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Q: able

A: Other expert has solved part b. Here We include part a answer.

Q: Hi, I think you misread the question, sorry

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Q: whats the answer to (2,1);m=2

A: Here we want to find the equation of the line Passing through the point (2,1) and slope m=2

Q: prow $ PCC-AIB)= pccl B) - p(AIB)

A: The answer is given below

Q: i need solution for d, e, f, g

A: With reference to the given data The regression equation with the independent variable height of…

Q: My homework is saying it's wrong?

A: One factor of the quadratic polynomial 5x2+2x+27 is 5x+9. Let, the other factor be (x+a), then…

Q: Could you

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Q: Is there a better explaination for part 2 because i dont get how they got there

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Q: To steelman is to  represent opposing views as accurately and positively as possible.     true or…

A: The following solution is given below :

Q: Is it true or false?

A:

Q: Could you explain part(b) as well?

A: Our objective is given below:

Q: r()"(;) -- 3 =. ... 4 V2/7 O Option 1 Option 2 2/VT

A: Gamma function value

Q: It is not well explained i am confused

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Q: I don't understand question a.

A: Here is the given bar graph of the population of the United States by race

Q: It says it is incorrect. Do you have other way?

A: (.)  Maximize z=12x1+10x2 Subject to                    x1+2x2≥20x1+x2≤46x1≥0 , x2≥0 By graphical…

Q: Need answer for this out of these options.

A: We have to find correct test stastics option..

Q: Is det(AB) = det(B A)? Justify your answer.

A: Given- detAB=detBA To justify- The above expression.

Q: Could u please explain the part b?

A: Answer-  True  explanation- look  carefully that we need these definitions- 1) Characteristic…

Q: The answers to the question is unclear.

A: We have given that Sample size (n) = 45Sample mean (x̅) = 120.48Standard deviations (σ) = 11.10

Q: but the answer in the book said test doesn't apply?

A: Given the infinite series :∑k=1∞sinkk2 is a positive term infinite series. Denoting the given series…

Q: Is this the solution to the question posted  or this is an error ?

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Q: Can you explain a bit more, I'm confused what the final answer is...

A: We’ve to find the probability that this sample average is less than 120 = P(X<120).  Given that,…