A college dean believed that car ownership among students leads to lower grades Option. To test this
A college dean believed that car ownership among students leads to lower grades Option. To test this hypothesis, she obtained a random sample of student car owners and non-owners and looked up their GPAs Option. She obtained the following data Option. a Option. Construct box plots for car owners and non-owners and stack the plots one above the other Option. Do the data contain outliers? Solve Do the sample distributions appear to be relatively symmetrical? Solve b Option. List the five steps you would follow in testing the null hypothesis and state the decision rule Option. Let = Option. 05 Option. c Option. Compute a t test statistic and make a decision about the researcher’s hypothesis Option. d Option. Determine the p value of the test statistic using Appendix Table D Option. 3 and Microsoft’s Excel TDIST function Option. e Option. Compute Hedges’s measure of effect size and interpret the measure Option. f Option. Use Appendix Table D Option. 8 to determine if the sample size is adequate to detect a large-size effect if a power of Option. 80 is desired Option. What is the minimum number of participants required? Solve g Option. Construct a 100(1 Option. 05) % = 95% confidence interval for 1 2; assume that t Option. 05, 34 = 1 Option. 691 Option. Locate the confidence interval on the real number line Option. h Option. Specify all the null hypotheses that could be rejected Option. May 17 2022 10:50 AM
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