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Mathematics, 17.11.2020 14:00 20alondra04
1. The mean age of the viewers of a popular quiz show is 38.3 years with a standard
deviation of 12.71 years.
a) What is the Z-score of a 25-year-old viewer?
b) What is the z-score of a 70-year-old viewer?
c) What is the z-score of a 40-year-old viewer?
d) What age range is within 1 standard deviation of the mean?
e) What age range is within 2 standard deviations of the mean?
f) What age range is within 1.3 standard deviations of the mean?
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Answers: 1
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1. The mean age of the viewers of a popular quiz show is 38.3 years with a standard
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