Mathematics, 17.12.2020 23:20 brian2913

16. The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday, The frequency summarizes the results. Find the standard deviation. Round your answer to one decimal place. Waiting time Number of
(minutes) customer
0-under 4 13
4-under 8 11
8-under 12 9
12-under 16 16
16-under 20 0
20-under 24 1

A. 4.9
B. 7.0
C. 5.2
D. 5.4

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