You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on constructing a confidence interval; however, you are not sure how many citizens should be included in the sample. If you want your sample estimate to be within 5 years of the actual mean with a confidence level of 96%, how many citizens should be included in your sample? Assume that the standard deviation of the ages of all the citizens in this community is 25 years. Type your answer in the following format: [xxx,xxx] with no space inside the brackets. An alternative is to type a single number (not in brackets) - if the system marks you incorrect, bear in mind that I do check all answers.
You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on constructing a confidence interval; however, you are not sure how many citizens should be included in the sample. If you want your sample estimate to be within 5 years of the actual mean with a confidence level of 96%, how many citizens should be included in your sample? Assume that the standard deviation of the ages of all the citizens in this community is 25 years. Type your answer in the following format: [xxx,xxx] with no space inside the brackets. An alternative is to type a single number (not in brackets) - if the system marks you incorrect, bear in mind that I do check all answers.
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