SOLUTION: 3. In Pittsburgh, Pennsylvania, about 56% of the days in a year are cloudy. a. Find the mean (average) number of days during the month of June (June has 30 days) that it will b

Algebra ->  Probability-and-statistics -> SOLUTION: 3. In Pittsburgh, Pennsylvania, about 56% of the days in a year are cloudy. a. Find the mean (average) number of days during the month of June (June has 30 days) that it will b      Log On


   

Question 317049: 3. In Pittsburgh, Pennsylvania, about 56% of the days in a year are cloudy.
a. Find the mean (average) number of days during the month of June (June has 30 days) that it will be cloudy in Pittsburgh, PA
b. Find the standard deviation of the number of days in the month of June that it will be cloudy in Pittsburgh, PA.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
3. In Pittsburgh, Pennsylvania, about 56% of the days in a year are cloudy.
a. Find the mean (average) number of days during the month of June (June has 30 days) that it will be cloudy in Pittsburgh, PA
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mean = np = 30*0.56 = 16.8
std = sqrt[npq] = sqrt[16.8*0.44] = 2.72
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Cheers,
Stan H.
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b. Find the standard deviation of the number of days in the month of June that it will be cloudy in Pittsburgh, PA.