Question

Suppose you managed to score the last 16-pack of paper towels on the shelf at Target. The paper towels claim to have 200 paper towels per roll. A few days later, in a moment of extreme boredom after having sheltered-in-place for the last several weeks, you are curious whether there are really 200 papers towels per roll. So you count the number of paper towels in all 16 rolls and find a mean of 196 towels per roll, with a standard deviation of 6 towels per roll.

What is the lower bound of the 95% confidence interval of the mean?

What is the upper bound of the 95% confidence interval of the mean?

Answer 1