A researcher is studying the average amount of time high school students spend on homework each week. A random sample of 50 high school students reports an average of 10 hours per week with a standard deviation of 2 hours. Calculate a 95% confidence interval for the population mean
Added by Lucy Y.
Step 1
First, we need to know the formula for a confidence interval, which is: sample mean ± (z-score * (standard deviation / √n)), where n is the sample size. Show more…
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