Suppose a binomial random variable consists of 9 trials with a success of probability of .4. What are the mean and standard deviation for this binomial random variable?
a. The mean is 2 and the standard deviation is 2.16.
b. The mean is 3.6 and the standard deviation is 1.47.
c. The mean and standard deviation cannot be calculated from the information given.
d. The mean is .4 and the standard deviation is 1.
Answer: b. The mean is 3.6 and the standard deviation is 1.47.
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.