STATISTICAL TECHNIQUES AND TOOLS
Z DISTRBUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The average waist size for teenage males is 29 inches with a standard deviation of 2 inches. If waist sizes are normally distributed, determine the z-score of a teenage male with a 33 inch waist.
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2
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1
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-2
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-1
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Explanation:
Detailed explanation-1: -The researchers found women’s waists on average grew more than 2 inches from 36.3 inches in 1999-2000 to 38.6 inches in 2015-2016, while men’s waists on average grew more than an inch from 39 inches in 1999-2000 to 40.2 inches in 2015-2016.
Detailed explanation-2: -Typically, a circumference of 35 inches or less is considered a normal and healthy waist size for women, according to the NIH. Women with a waist measurement greater than 35 inches may be at higher risk for certain diseases and health issues.
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