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Statistics / Elementary Statistics 12 / Chapter 8.5 / Problem 2BSC

Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola

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Requirements If we want to use the sample data from

Chapter 8, Problem 2BSC

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QUESTION:

Requirements If we want to use the sample data from Exercise 1 to test the claim that the sample is from a population with a standard deviation less than 1.8 min, we must satisfy the requirements of having a simple random sample and a normally distributed population. In Exercise 1 it was stated that the sample is a simple random sample.

a. In general, how does the normality requirement for a hypothesis test of a claim about a standard deviation differ from the normality requirement for a hypothesis test of a claim about a mean?

b. What methods can be used to determine whether the normality requirement is satisfied?

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QUESTION:

Requirements If we want to use the sample data from Exercise 1 to test the claim that the sample is from a population with a standard deviation less than 1.8 min, we must satisfy the requirements of having a simple random sample and a normally distributed population. In Exercise 1 it was stated that the sample is a simple random sample.

a. In general, how does the normality requirement for a hypothesis test of a claim about a standard deviation differ from the normality requirement for a hypothesis test of a claim about a mean?

b. What methods can be used to determine whether the normality requirement is satisfied?

ANSWER:

Solution 2BSC

(a)

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