9.3 Distribution Needed for Hypothesis Testing

Picking the test statistic's distribution from what is known about the population spread and whether the parameter tested is a mean or a proportion.

Statistics, 9.3 Distribution Needed for Hypothesis Testing

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7 exercises

9.3 Exercise 1

Which two distributions can you use for hypothesis testing for this chapter?

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9.3 Exercise 3

Which distribution do you use when the standard deviation is not known and you are testing one population mean? Assume sample size is large.

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9.3 Exercise 5

A population has a mean of 25 and a standard deviation of five. The sample mean is 24, and the sample size is 108. What distribution should you use to perform a hypothesis test?

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9.3 Exercise 7

You are performing a hypothesis test of a single population mean using a Student’s t-distribution. What must you assume about the distribution of the data?

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9.3 Exercise 9

You are performing a hypothesis test of a single population proportion. What must be true about the quantities of np and nq?

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9.3 Exercise 11

You are performing a hypothesis test of a single population proportion. The data come from which distribution?

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9.3 Exercise 12

It is believed that Lake Tahoe Community College (LTCC) Intermediate Algebra students get less than seven hours of sleep per night, on average. A survey of 22 LTCC Intermediate Algebra students generated a mean of 7.24 hours with a standard deviation of 1.93 hours. At a level of significance of 5 percent, do LTCC Intermediate Algebra students get less than seven hours of sleep per night, on averag…

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