(Solved): Thunderstorm Speeds A meteorologist who sampled 10 thunderstorms found that the average speed at wh ...

Thunderstorm Speeds A meteorologist who sampled 10 thunderstorms found that the average speed at which they traveled across a certain state was 15 miles per hour. The standard deviation of the sample was 3.1 miles per hour. Round the final answers to at least two decimal places. Part: 0 / 20 of 2 Parts Complete Part 1 of 2 Find the 80% confidence interval of the mean. Assume the variable is normally distributed