Question Help ! In a survey conducted by a polling company, 1100 adult Americans

Question

Question Help ! In a survey conducted by a polling company, 1100 adult Americans were asked how many hours hey worked in the previous week. Based on the results a 95% confidence interval for the mean number of hours worked had a lower bound of 42.7 and an upper bound of 44.5. Provide two recommen margin of error of the interval. dations for decreasing the Select all that apply. A. Increase the sample size B. Use fewer degrees of freedom. D. Increase the confidence level. F. Decrease the confidence level. C. Decrease the standard deviation of hours worked. E. Decrease the sample size. Click to select your answer(s)

Explanation / Answer

Answer : A : Increase the sample size

C: Decrease the standard deviation of hours worked

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