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Chapter 11: Q. 9 (page 735)

Which of the following may we conclude, based on the test results?

(a) There is strong evidence of an association between wiring configuration and the chance that a child will develop some form of cancer.

(b) HCC either cause cancer directly or is a major contributing factor to the development of cancer in children.

(c) Leukemia is the most common type of cancer among children.

(d) There is not much evidence of an association between wiring configuration and the type of cancer that caused the deaths of children in the study.

Short Answer

Expert verified

(d) There is not much evidence of an association between wiring configuration and the type of cancer that caused the deaths of children in the study.

Step by step solution

01

Given Information

Need to find which of the following may we conclude, based on the test results.

02

Explanation

The value of the test statistic is given underneath the two-way table:

蠂2=0.435

The P-value is the probability of obtaining the value of the test statistic, or a value more extreme. The P-value is the number (or interval) in the column title of Table C containing the t-value in the row

localid="1650541434830" df=(r-1)(c-1)=(2-1)(3-1)=2

P>0.25

If the P-value is less than or equal to the significance level, then the null hypothesis is rejected:

localid="1650541665338" P>0.05鈬�Fail to rejectH0

There is sufficient evidence to support the claim of an association and thus answer (d)is correct.

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Most popular questions from this chapter

Calculate the expected count for each color, assuming that the company鈥檚 claim is true. Show your work.

Some people think recycled products are lower in quality than other products, a fact that makes recycling less practical. Here are data on attitudes toward coffee filters made of recycled paper from a random sample of adults:

(a) Make a bar graph that compares buyers鈥� and non-buyers鈥� opinions about recycled filters. Describe what you see

(b) Minitab output for a chi-square test using these data is shown below. Carry out the test. What conclusion do you draw?

No answer (4.1) Explain carefully how nonresponse could lead to bias in this project

The appropriate null hypothesis for performing a chi-square test is that

(a) equal proportions of female and male teenagers are almost certain they will be married in 10 years.

(b) there is no difference between female and male teenagers in this sample in their distributions of opinions about marriage.

(c) there is no difference between female and male teenagers in the population in their distributions of opinions about marriage.

(d) there is no association between gender and opinion about marriage in the sample.

(e) there is no association between gender and opinion about marriage in the population.

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

(a) Check that the conditions for performing the chi-square test are met.

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

(c) Interpret the P-value from the calculator in context.

(d) What conclusion would you draw? Justify your answer.
See all solutions

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