Suppose we are testing the hypotheses H0 :?= 100 and Ha:?< 100. Suppose the population variance is unknown. Which sample mean will have the smaller p-value, x = 90 or x = 85? Select all that apply.
a) x = 85 will have a smaller p-value because it is further from ?0 = 100.
b) x = 90 will have a smaller p-value because it is closer to ?0 = 100.
c) Can not answer because the test statistics also depends on sample standard deviation s which is not given.
d) x = 90 will have a smaller p-value because it provides more support for HA.