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Chapter 15 E-text Scott Ward

# Chapter 15 E-text Scott Ward - Chapter Exercises 15.18...

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Chapter Exercises 15.18 Sixty-four students in an introductory college economics class were asked how many credits they had earned in college, and how certain they were about their choice of major. Research question: At α = .01, is the degree of certainty independent of credits earned? H o : certainty and credits earned are independent H 1 : certainty and credits earned are dependent After entering the information I got a p-value of 0.934 using ANOVA test with the given data. This shows that we failed to reject the null hypothesis. Chapter Exercises 15.22 A student team examined parked cars in four different suburban shopping malls. One hundred vehicles were examined in each location. Research question: At α = .05, does vehicle type vary by mall location? Ho: vehicle type is independent of mall location Ho; vehicle type is dependent on mall location Using the chi squared test I got a value of 22.103 P value of .0085 Reject null hypothesis since p value is less than 5% Chapter Exercises 15.24

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