9.2

HW Score: 75.32 70, 9.04 Of 12 E Homework: 9.2

Homework: 9.2 Question 8, 9.2.25 points O Points: O of 1 Save In a survey conducted by the Gallup Organization, 1100 adult Americans were asked how many hours they 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 recommendations for decreasing the margin Of error Of the interval. Select the two recommendations that would decrease the margin of error of the interval. Decrease the sample size. Increase the confidence level. Decrease the confidence level. Increase the sample size. Use fewer degrees of freedom. Decrease the standard deviation of hours worked.