Question no 1Suppose the heights of a group of people follow a normal distribution with a mean of 170 cm and a standard deviation of 10 cm. If 25% of the people are shorter than 160 cm, what is the minimum height required to be in the tallest 10% of the group? If a sample of 50 people is randomly selected from the group, what is the probability that their average height is between 168 and 172 cm?
Question no 1Suppose the heights of a group of people follow a normal distribution with a mean of 170 cm and a standard deviation of 10 cm. If 25% of the people are shorter than 160 cm, what is the minimum height required to be in the tallest 10% of the group? If a sample of 50 people is randomly selected from the group, what is the probability that their average height is between 168 and 172 cm?
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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Question no 1Suppose the heights of a group of people follow a normal distribution with a mean of 170 cm and a standard deviation of 10 cm. If 25% of the people are shorter than 160 cm, what is the minimum height required to be in the tallest 10% of the group? If a sample of 50 people is randomly selected from the group, what is the probability that their average height is between 168 and 172 cm?
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