A Random Sample of Size 15 Is Selected from a Normal

Multiple Choice

A random sample of size 15 is selected from a normal population. The population standard deviation is unknown. Assume the null hypothesis indicates a two-tailed test and the researcher decided to use the 0.10 significance level. For what values of t will the null hypothesis not be rejected?

A) To the left of −1.282 or to the right of 1.282
B) To the left of −1.345 or to the right of 1.345
C) Between −1.761 and 1.761
D) To the left of −1.645 or to the right of 1.645