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A psychologist studying addiction tests whether cravings for cocaine and relapse are independent. The following table lists the observed frequencies in the small sample of people who use drugs.Obs. Freq.Relapse YesNoCravingsYes211334No61824 2731N = 58
(a) Conduct a chi-square test for independence at a 0.05 level of significance. (Round your answer to two decimal places.)
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Decide whether to retain or reject the null hypothesis.Retain the null hypothesis.Reject the null hypothesis.
(b) Compute effect size using ?? and Cramer's V. Hint: Both should give the same estimate of effect size. (If necessary, round your intermediate steps to two or more decimal places. Round your answers to two decimal places.)??=V=
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Caselet on McDonald’s vs. Burger King - Waiting time
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Problems on Sampling Variability and Standard Error and Confidence Intervals
Estimate the population mean
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
Find out the probability
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