QUESTION 11 Find the standard deviation of the data summarized in the given freq

Question

QUESTION 11 Find the standard deviation of the data summarized in the given frequency distribution. ger of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday. The frequency distribution below summarizes the results. Find the standard deviation. Round your answer to one decimal place. Waiting time Number of (minutes) customer 0-3 4-7 8-11 12-15 16-19 20-23 O A 7.0 mirn O B.53 mir O C.5.9 min O D.5.6 min 13 13 10 0 QUESTION 12 Find the range for the given sample data. Listed below are the amounts of weight change (in pounds) for ten women during their first year of work after graduating from college Positive values correspond to women who gained weight and negative values correspond to women who lost weight What is the range? 39512-1270-87-1 A 19 lb B.4 lb C 27 lb D. 35 lb

Explanation / Answer

Answer - 11: The statistical software output for this problem is:

Approximate summary statistics:
Using counts in f

Hence,

Standard devation = 5.6 min

Option D is correct.

Answer - 12: Range = Maximum - Minimum = 27 - (-8) = 35

Option D is correct.

Column Std. dev. x 5.5924147

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