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A survey shows that residents of Fairfax spend an average of 25.5 hours grocery shopping per...

A survey shows that residents of Fairfax spend an average of 25.5 hours grocery shopping per month, with a standard deviation of 2.5 hours. Assuming this is a normal distribution, solve the following.

  1. What is the probability that a randomly chosen Fairfax resident spends more than 30 hours a month grocery shopping?

Answer__________

  1. What is the probability that a randomly chosen Fairfax resident spends between 19 and 23.5 hours a month grocery shopping?

Answer__________

  1. What is the probability that a randomly chosen Fairfax resident spends fewer than 22 hours a month grocery shopping or more than 31 hours a month grocery shopping?

Answer__________

  1. Between what two raw values will the middle 95% of the residents spend grocery shopping?

Answers__________

               __________

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