Mathematics, 20.09.2020 14:01 Thomas7785
A study reports that freshmen at public universities work 10.2 hours a week for pay, on average, and the sn is 8.5 hours; at private universities, the average is 8.1 hours and the sn is 6.9 hours. Assume these data are based on two independent simple random samples, each of size 1,000.
Required:
Construct a 95% confidence interval for the difference of the hours worked.
Answers: 2
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