Find the standard deviation, s, of sample data summarized in the frequency distribution table below by using the formula below, where x represents the class midpoint, f representsthe class frequency, and n represents the total number of sample values. Use the calculator to findthe standard deviation.IntervalFrequency20-291+30-391Standard deviation (Round to one decimal place as needed)+40-49550-59260-691570-793980-8932n KFind the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 50.8 milesSpeed (miles per hour)50-53Frequency42-4528The mean of the frequency distribution is miles per hour.(Round to the nearest tenth as needed.)46-491254-573r hour.per58-612n

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Find the standard deviation, s, of sample data summarized in the frequency distribution table below by using the formula below, where x represents the class midpoint, frepresents the class frequency, and n represents the total number of sample values. Use the calculator to find the standard deviation Interval Frequency Standard deviation 20-29 1 + + 30-39 1 (Round to one decimal place as needed) 40-49 + 50-59 60-69 15 70-79 39 80-89 32