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You are planning to move to a certain part of the country but are concerned with...

You are planning to move to a certain part of the country but are concerned with the temperature during the summer months. Literature sent to you by the Chamber of Commerce indicates that during the summer months, the daily temperature, measured at noon, is normally distributed with mean=80 degrees Fahrenheit and standard deviation=4 degrees Fahrenheit.

a) If summer lasts exactly 90 days, how many summer days are expected to have a temperature exceeding 90 degrees Fahrenheit?

b) Find the 90th percentile of the distribution of daily temperatures and explain what this number means.

c) How many summer days are expected to have a temperature below 80 degrees fahrenheit.

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Answer #1

- 96 4 :O.0o2 Cemasf。ndira z.sco to 1.8. ho 128 2 - X-80 t) 85-128 X 85-13 (z 80-80 ap 0.5 ×90

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