The mean monthly rent for a one-bedroom apartment without a doorman in Manhattan is $2631.Assume that the standard deviation is $400.

A real estate firm samples84 apartmentsin Manhattan.

What is the probability that the mean of the rents from this sample isless than $2450?First find the z-score, then compute the probability.

1. Z-score (rounded to 2 decimal places.):

2. The probability (rounded to 4 decimal places.) :______________________