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A Gallup poll of 1100 adult Americans were asked how many hours they worked in the previous week. Based on the results, the mean number

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A Gallup poll of 1100 adult Americans were asked how many hours they worked in the previous week. Based on the results, the mean number of hours worked was 43.6 hours and a standard deviation of 2.3 hours. What is the stated sample size? What is the sample mean ? What is the sample standard deviation x

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