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In: Statistics and Probability

An article was released claiming that undergraduate SHU students study a mean of 250 hours per...

An article was released claiming that undergraduate SHU students study a mean of 250 hours per semester. You want to gather data to prove that the mean study time per semester for undergraduate SHU students is actually more than 250 hours. You take a sample of undergraduate SHU students and find their mean study time to be 265 hours per semester with a standard deviation of 70 hours. Answer the following questions using α = .1.

1. State the null and alternative hypotheses. (3 pts)

2. State the rejection rule, find the test statistic, and conclude whether or not you reject the null hypothesis (and with how much confidence)

if: (a) the sample consisted of 25 students. (9 pts) (b) the sample consisted of 100 students. (8 pts)

Solutions

Expert Solution

sample of undergraduate SHU students has

1)

2) a) n = 25

b)

orchestra answered 2 years ago
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