Question: 4. In an analysis designed to estimate how often call center operators were idle, 90 observations were made. Operators were idle 37 times. Based on

4. In an analysis designed to estimate how often call center operators were idle, 90 observations were made. Operators were idle 37 times. Based on the initial results, approximately how many observations would you require to estimate the actual percentage idle time, within 3 % with a confidence of 95%.

4. In an analysis designed to estimate how often

Z- Confidence value 90% 1.65 95% 1.96 95.5% 2.00 98% 2.33 99% 2.58

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