Question: An analyst made the following observations about whether customer service representatives were busy (B) or idle (I): a. What is the percentage of idle time?

An analyst made the following observations about whether customer service representatives were busy (B) or idle (I):

a. What is the percentage of idle time?

b. Given these results, how many observations would be needed to estimate the actual percentage of idle time to within 6 percent with a confidence of 90percent?

Observation 1 2 3 4 5 67 8 9 10 11 12 13 14 15 16 17 18 19 20 Busy or idle BB I B I B B B I B B B B I B B B

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