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?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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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?
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