Thunderstorm Speeds A meteorologist who sampled 5 thunderstorms found that the average speed at which they traveled across a certain state was 13 miles per hour. The standard deviation of the sample was 3.4 miles per hour. Round the final answers to at least two decimal places. E Part: 0 / 2 Part 1 of 2 olo Find the 99% confidence interval of the mean. Assume the variable is normally distributed.