1. A sample of 61 students at a university were asked how many hours of sleep they get on weeknights. The sample had a mean of 6.2 hours and a standard deviation of 0.7 hours. a. Use your calculator to construct a 95% confidence interval estimate for the mean reported weeknight sleep time among students at that university. Write a statement (we are...) that interprets your answer.
Added by Brenda F.
Step 1
Since we want a 95% confidence interval, we need to find the critical value for a two-tailed test with a sample size of 61. Using a t-distribution table or calculator, we find the critical value to be 2.00. Show more…
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