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Chapter 11: Q. 3 (page 734)

The conditions for carrying out the chi-square test in exercise T11.2 are

I. Separate random samples from the populations of interest.

II. Expected counts large enough.

III. The samples themselves and the individual observations in each sample are independent.

Which of the conditions is (are) satisfied in this case?

(a) I only

(d) Il and III only

(b) II only

(e) I, II, and III

(c) I and II only

Short Answer

Expert verified

(e) I, II, and III

Step by step solution

01

Given Information

Need to say which case satisfies the conditions.

02

Explanation

The test that was executed in exercise 2 was the chi-square test for association/independence.

There are three requirements to perform this test: Random, Normal, and Independent.

Random: The samples need to be separate random samples of the population.

Normal: All expected counts need to be at least 5

Independent: The samples are independent and the individual observations in each sample are independent.

Thus I, II, and III all need to be satisfied in this case, and thus answer (e) is correct.

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Most popular questions from this chapter

32. How are schools doing? Refer to Exercises 28 and 30 .

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(b) Use Table Cto find the P-value. Then use your calculator's 蠂2cdfcommand.

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(b) Describe a Type I error and a Type II error in this setting, and give a possible consequence of each. Which do you think is more serious?

The University of Chicago鈥檚 General Social Survey (GSS) is the nation鈥檚 most important social science sample survey. For reasons known only to social scientists, the GSS regularly asks a random sample of people their astrological sign. Here are the counts of responses from a recent GSS:

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