Suppose a recent report indicates that the mean height of girls between the ages of seven and nine is 129 cm. Rachel, a school
nurse, collects data on a randomly selected sample of 48 girls in this age range and decides to use a hypothesis test to
determine whether the mean height is greater than reported.
Which of the following hypothesis tests should Rachel use to determine if the mean height of girls between the ages of
seven and nine is greater than the reported mean of 129 cm?
one-sample left-tailed z-test for a mean
one-sample right-tailed ź-test for a mean
one-sample two-tailed t-test for a mean
one-sample left-tailed t-test for a mean
one-sample right-tailed t-test for a mean