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1) Suppose that, on average, electricians earn approximately H = $53,200 per year in the United States. Assume that the distribution for electricians' yearly earnings is normally distributed and that the standard deviation is o = $12,500. Given a sample of sixteen electricians, what is the standard deviation for the sampling distribution of the sample mean? 2) Susan has been on a bowling team for 13 years. After examining all of her scores over that period of time, she finds that they follow a normal distribution. Her average score is 230, with a standard deviation of 20. Using an appropriate normal transformation, what is the probability that in a one-game playoff, her score is more than 236?

1) Suppose that, on average, electricians earn approximately H = $53,200 per year in the United States. Assume that the distribution for electricians' yearly earnings is normally distributed and that the standard deviation is o = $12,500. Given a sample of sixteen electricians, what is the standard deviation for the sampling distribution of the sample mean? 2) Susan has been on a bowling team for 13 years. After examining all of her scores over that period of time, she finds that they follow a normal distribution. Her average score is 230, with a standard deviation of 20. Using an appropriate normal transformation, what is the probability that in a one-game playoff, her score is more than 236?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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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1) Suppose that, on average, electricians earn approximately H = $53,200 per year in the United States. Assume that the distribution for electricians' yearly earnings is normally distributed and that the standard deviation is o = $12,500. Given a sample of sixteen electricians, what is the standard deviation for the sampling distribution of the sample mean? 2) Susan has been on a bowling team for 13 years. After examining all of her scores over that period of time, she finds that they follow a normal distribution. Her average score is 230, with a standard deviation of 20. Using an appropriate normal transformation, what is the probability that in a one-game playoff, her score is more than 236? Multiple Choice
Transcribed Image Text:1) Suppose that, on average, electricians earn approximately H = $53,200 per year in the United States. Assume that the distribution for electricians' yearly earnings is normally distributed and that the standard deviation is o = $12,500. Given a sample of sixteen electricians, what is the standard deviation for the sampling distribution of the sample mean? 2) Susan has been on a bowling team for 13 years. After examining all of her scores over that period of time, she finds that they follow a normal distribution. Her average score is 230, with a standard deviation of 20. Using an appropriate normal transformation, what is the probability that in a one-game playoff, her score is more than 236? Multiple Choice
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