A random sample of 16 college students were asked how many U.S. states they have visited. The sample mean was 4.69 and the sample standard deviation was 3.7. (Please round all proportions to three decimal places. Do not convert to percentage.)

a) What is the standard error for the sampling distribution?


b) From the survey results, estimate the mean number of states visited among all college students, using a 95% confidence interval.
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