Unit Test #76

Select your answers to the following 5 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.

 

 

Q1:

 

A binomial distribution has n = 10 and p = 0.6.

n is the number of trials and p is the probability of a success at each trial.

What is the mean of this distribution?

A. 0.6

B. 0.4

C. 4

D. 6

Answer 1:

 

 

Q2:

 

What is the standard deviation of the binomial distribution in question 1 (to 3 s.f.)?

A. 2.16

B. 1.55

C. 0.6

D. 2.4

Answer 2:

 

 

Q3:

 

If random samples of size 50 are taken from the distribution in question 1, what is the mean of the distribution of sample means?

A. 0.6

B. 0.4

C. 4

D. 6

 

Answer 3:

 

 

Q4:

If random samples of size 50 are taken from the distribution in question 1, what is the standard deviation of the distribution of sample means?

A. 0.219

B. 0.031

C. 2.16

D. 1.55

Answer 4:

 

 

Q5:

 

What is the probablity that the mean of a sample of size 50 is greater than 6.2?

A. 0.9132

B. 0.3194

C. 0.1806

D. 0.7326

Answer 5: