Mathematics, 06.11.2020 22:30 conroyjoann22
3. The teachers union is concerned about the amount of time teachers spend each week doing schoolwork at
home. A simple random sample of 56 teachers had a mean of 8.0 hours per week working at home after
school. Assume that the Yoopulation standard deviation is 1.5 hours per week.
a. Construct a 95% confidence interval estimate for the mean number of hours per week a teacher spends
working at home.
b. Does the confidence interval support that teachers work at home after school more than 10 hours a week?
Why or why not?
Answers: 2
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