19. According to a recent report, the average American consumes 22.7 teaspoons of sugar each day (National Geographic Magazine, August 2013). Assuming that the distribution is approximately normal with a stan- dard deviation of o = 4.5, find each of the following values. a. What proportion of people consume more than 30 teaspoons of sugar a day? b. What proportion of people consume at least 20 teaspoons of sugar a day?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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19. According to a recent report, the average American
consumes 22.7 teaspoons of sugar each day (National
Geographic Magazine, August 2013). Assuming that
the distribution is approximately normal with a stan-
dard deviation of o = 4.5, find each of the following
values.
a. What proportion of people consume more than 30
teaspoons of sugar a day?
b. What proportion of people consume at least 20
teaspoons of sugar a day?
Transcribed Image Text:19. According to a recent report, the average American consumes 22.7 teaspoons of sugar each day (National Geographic Magazine, August 2013). Assuming that the distribution is approximately normal with a stan- dard deviation of o = 4.5, find each of the following values. a. What proportion of people consume more than 30 teaspoons of sugar a day? b. What proportion of people consume at least 20 teaspoons of sugar a day?
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