Question: confused Problem 4: Suppose we want to estimate the average number of times a middleage adult in a town shopped online last week. However, we

confused

Problem 4: Suppose we want to estimate the average number of times a middleage adult in a town shopped online last week. However, we don't have a list of middleage adults of this town. A simple random sampling of l-II} persons is taken and onl},r 5? out of l persons are middleage adults. The following table summarizes the number of times these 57 middleage adults shopped online last week: Numberoftimesshoppingonline I] 1 2 3 4 5 E 7 Number ofmiddleageadults 17 2|] 1|] 3 3 [I I] 1 Assume that the population of this town is much larger than III}. 1. Compute the estimate and its standard error. 2. Construct a 95% condence interval for the average number of times a middleage adult shopped online last week. 3. Further assume that this town has a population of 13,033. Estimate the total number of times all middleage adults in this town shopped online last week. Construct a 95% condenoe interval for this quantity

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