Practice Assignment 4 Page 1 of3 Answers will be posted on Blackboard Learn. 1.

Question

Practice Assignment 4 Page 1 of3 Answers will be posted on Blackboard Learn. 1. You are the head of a non-profit that is providing housing for homeless families. You are looking at an area of the city where a sample has shown the mean rent for a 3 bedroom house is $1,500 with a standard deviation of $200 a. You have a funder that is willing to provide a rent of $1,750 for a number of families. What percent of your target families would be excluded from housing if they needed more than this amount?

Explanation / Answer

a) P(X > 1750) = P((X - mean)/sd > (1750 - 1500)/200)

                        = P(Z > 1.25)

                        = 1 - P(Z < 1.25)

                        = 1 - 0.8944

                        = 0.1056 = 10.56%

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