Thunderstorm Speeds A meteorologist who sampled 10 thunderstorms found that the average speed at which they traveled across a certain state was 12 miles per hour. The standard deviation of the sample...

Extracted text: Thunderstorm Speeds A meteorologist who sampled 10 thunderstorms found that the average speed at which they traveled across a certain state was 12 miles per hour. The standard deviation of the sample was 2.2 miles per hour. Use a graphing calculator and round the answers to at least one decimal place. Part 1 of 2 Find the 85% confidence interval of the mean. Assume the variable is normally distributed. 10.9 < u="">< 13.1="" 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="">