For the “Hours Worked” survey conducted by Gallup in Problem 23, provide two recommendations for increasing the precision of the interval.

Data from problem 23

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 mean number of hours worked was lower bound: 42.7 and upper bound: 44.5. Which of the following represents a reasonable interpretation of the result? For those that are not reasonable, explain the flaw.