A Random Sample of 10 Observations Was Selected from a Normal

Multiple Choice

A random sample of 10 observations was selected from a normal population distribution. The sample mean and sample standard deviations were 20 and 3.2, respectively. A 95% prediction interval for a single observation selected from the same population is

A) 20 $\pm$
6) 152
B) 20 $\pm$
4) 244
C) 20 $\pm$
7) 962
D) 20 $\pm$
7) 592
E) None of the above answers are correct.