1) The 1 population t-test for the mean has an underlying assumption of normality (True/False)
2) For n<100, the t-distribution will be more peaked and less spread out than the z-distribution (True/False)
3) The t distribution is always symmetric around a value of zero (True/False)
4) Both the t and z distributions vary with sample size (True/False)
5) You survey 300 people and find that 80 of them do not have siblings. Is this significantly different from the 25% known for the US average? Find the z* value that you will use to test this question. Assume the z critical value is 1.96 (give answer as 0.XX)
6) For the same question above, is your alternative hypothesis:
a. left tailed
b. right tailed
c. two tailed
d. No answer text provided.