Thunderstorm Speeds A meteorologist who sampled 13 thunderstorms found that the average speed at which they traveled across a certain state was 17 miles per hour. The standard deviation of the sample was 1.6 miles per hour. Use a graphing calculator and round the answers to at least one decimal place. Part 1 of 2 Find the 97% confidence interval of the mean. Assume the variable is normally distributed. 16.0 | < < | 18.0 Part: 1/2 Part 2 of 2 If a meteorologist wanted to use the highest speed to predict the times it would take storms to travel across the state in order to issue warnings, what figure would she likely use? The meteorologist should use miles per hour for the prediction. 5