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The square footage of rental properties in New Orleans is normally distributed with a mean of...

The square footage of rental properties in New Orleans is normally distributed with a mean of 1000 square feet and a standard deviation of 150 square feet.
a. If we visit one rental property in New Orleans, what is the probability that its square footage is more than 1200 square feet?
b. If we visit four rental properties in New Orleans, what is the probability that their mean square footage is more than 1200 square feet?
5. Let ? be a random variable with the following probability distribution.
? ?(?)

1 0.6

5 0.4
Consider a sample of size 3 from the population, and let ?̅ be the sample mean. Construct a probability distribution for ?̅.

0 0
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