Question: step by step result Question 4) The board of a Condo Corporation would like to know the number of times residents use the elevator in

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Question 4) The board of a Condo Corporation would like to know the number of times residents use the elevator in a week. There are 400 residents in the building. The management office surveys 50 residents and determines the mean to be 20 with a standard deviation of 15. What is the true number of times a resident uses the elevator within one week with a confidence of 95%? (2 Marks)

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