Question

The rent for a one-bedroom apartment in Southern California follows the normal distribution with a mean of $2,475 per month and a standard deviation of $290 per month. The distribution of the monthly costs does not follow the normal distribution. In fact, it is positively skewed.

What is the probability of selecting a sample of 45 one-bedroom apartments and finding the mean to be at least $2,365 per month? (Round z value to 2 decimal places and final answer to 4 decimal places.)

Probability

Answer 1

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2 solution: Given mean (u) 2 2475 SD ) - 290 Sample sizen) = 45 P [X > 2365): 1-PCX <2365) 21-P/X-4 2365-2475 (lun 290/sus ) 21-P(Z <-2.54) - 1-0.0055426 - 0.9944574 Probability -0.9945

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