A random sample of 16 college students were asked how many U.S. states they have visited. The sample mean was 4.81 and the sample standard deviation was 3.2.

a) What is the standard error for the sampling distribution? (Please round to two decimal places.)


b) From the survey results, estimate the mean number of states visited among all college students, using a 99% confidence interval. (Please round to two decimal places.)
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