Question 1
A survey found that women spend on average $146.21 on beauty products during the summer
months. Assume the standard deviation is $29.44. Find the percentage of women who spend less
than $160.00. Assume the variable is normally distributed.
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Question 2
Each month, an American household generates an average of 30 pounds of newspaper for
garbage or recycling. Assume the standard deviation is 2 pounds. If a household is selected at
random, find the probability of its generating
a. Between 28 and 31 pounds per month
b. More than 30 pounds per month
Sample Solution
