Question 1The length of time a person takes to decide which shoes to purchase is normally distributed with

a mean of 8.21 minutes and a standard deviation of 1.90. Find the probability that a randomly selected individual will take less than 5 minutes to select a shoe purchase. Is this outcome unusual?

A)Probability is 0.954, which is usual as it is greater than 5%

B)Probability is 0.045, which is unusual as it is less than 5%

C)Probability is 0.045, which is usual as it is not less than 5%

D)Probability is 0.954, which is unusual as it is greater than 5%

Question 2

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. Find the probability that a randomly selected bill will have an amount greater than $165, which the city believes might indicate that someone is wasting water. Would a bill that size be considered unusual?

A)Probability is 0.06, which is unusual as it is not less than 5%

B)Probability is 0.94, which is usual as it is greater than 5%

C)Probability is 0.06, which is usual as it is not less than 5%

D)Probability is 0.94, which is unusual as it is greater than 5%

Question 3

In a health club, research shows that on average, patrons spend an average of 46.2 minutes on the treadmill, with a standard deviation of 4.8 minutes. It is assumed that this is a normally distributed variable. Find the probability that randomly selected individual would spent between 30 and 40 minutes on the treadmill.

A)0.10

B)0.90

C)-0.10

D)0.80

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