a. What is the standard deviation for a sample of 50 values, all of which are the same?

b. Which of the following two car batteries would you prefer to buy, and why?

• One taken from a population with a mean life of 48 months and a standard deviation of 2 months

• One taken from a population with a mean life of 48 months and a standard deviation of 6 months

c. If an outlier is included with a sample of 50 values, what is the effect of the outlier on the mean?

d. If an outlier is included with a sample of 50 values, what is the effect of the outlier on the median?

e. If an outlier is included with a sample of 50 values, what is the effect of the outlier on the range?

f. If an outlier is included with a sample of 50 values, what is the effect of the outlier on the standard deviation?