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# A meteorologist who sample 4 thunderstorms found that the average speed at which they traveled across a certain state was 12 miles per hr. The...

A meteorologist who sample 4 thunderstorms found that the average speed at which they traveled across a certain state was 12 miles per hr. The standard deviation of the sample was 3.1 miles per hour. round the final answers to two decimal places

find the 98% confidence interval of the mean. assume the variable is normally distributed