The average monthly gasoline (gallon) purchase for a family with 2 cars is 62 gallons. This statisti
Question: The average monthly gasoline (gallon) purchase for a family with 2 cars is 62 gallons. This statistic has a normal distribution with a standard deviation = 6 gallons. A family is chosen at random.
a. Find the probability that the family's monthly gasoline (gallon) purchases will be between 54 and 75 gallons.
b. Find the probability that the family's monthly gasoline (gallon) purchases will be less than 69 gallons.
c. What is the probability that the family's monthly gasoline (gallon) purchases will be more than 65 gallons?
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