Mathematics, 29.11.2019 02:31 PENTALIZARD6369
Listed below are the number of years it took for a random sample of college students to earn bachelor's degrees (based on data from the national center for education statistics). 4, 4, 4, 4, 4, 4, 4.5, 4.5, 4.5, 4.5, 4.5, 4.5, 6, 6, 8, 9, 9, 13, 13, 15
(a) calculate the sample mean and standard deviation.
(b) calculate the standard error, se.
(c) what is the point estimate for the mean time required for all college students to earn bachelor's degrees?
(d) construct the 90% confidence interval estimate of the mean time required for all college students to earn bachelor's degrees.
(e) does the confidence interval contain the value of 4 years? is there anything about the data that would suggest that the confidence interval might not be a good result?
Answers: 2
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Listed below are the number of years it took for a random sample of college students to earn bachelo...
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