Statisitc Foundation week 5

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
Assume the variable is approximately normally distributed
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