Question 1

Let Z be the standard normal variable. Find the value of z if z satisfies   .

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 2

In European roulette the wheel is divided into 37 compartments numbered 1 through 36 and 0. (In American roulette there are 38 compartments numbered 1 through 36, 0, and 00.) Find the expected value of the winnings on a $3 bet placed on red in European roulette. Round your answer to the nearest cent.

Accepted Answer

A)  $0.08% 
B)  - $0.08% 
C)  - $0.03% 
D)  $0.03% 
A)  $0.08% 
B)  - $0.08% 
C)  - $0.03% 
D)  $0.03%

Question 3

The distribution of the number of chocolate chips (x) in a cookie is shown in the following table. Find the mean and the variance of the number of chocolate chips in a cookie. Give answers to four decimal places, if necessary.     __________   __________

Accepted Answer

The answer of The distribution of the number of chocolate...

Let Z be the standard normal variable. Find the value of z if z satisfies .

The distribution of the number of chocolate chips (x) in a cookie is shown in the following table. Find the mean and the variance of the number of chocolate chips in a cookie. Give answers to four decimal places, if necessary.

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Exam 8: Probability Distributions and Statistics