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A" A" Aa Ap - V 2 - V AaBbCcDd AaBbCcDdEe Av DVAv Heading 1 Normal Chart of region, smoker 90 80 70 7.(4%2) Information was gathered on the incidence of smoking by region of 50 the country. The results are Percent shown to the right. (We're 40 testing at the 0.05 level of 30 significance.) 20 We would like to know if the prevalence of smoking 10 differs across regions of O the country. What should smoker no yes no yes no no yes our hypotheses be? region northeast northwest southeast southwest Percent is calculated within levels of region. State the hypotheses. Ho: There is no association between northeast northwest southeast southwest All prevalce of smoking and region of | country. These two viariables are no 257 267 269 267 1060 independent. 79.32 82.15 73.90 82.15 79.22 Ha: There are some association between prevalence of smoking and region yes 67 58 95 58 278 of country, these two variables are 20.68 17.85 26.10 17.85 20.78 dependent. What conclusion should be drawn? All 324 325 364 325 1338 a. Accept the null hypothesis. 100.00 100.00 100.00 100.00 100.00 b. Do not reject the null hypothesis. c. Reject the null hypothesis and Cell Contents Count withhold judgment on the % of Column alternative hypothesis. d. Reject the null and accept the alternative hypothesis. Chi-Square Test Explain in some detail these results in a way that a non-statistician would Chi-Square DF P-Value understand. What should you tell those Pearson 9.657 3 0.022 you're reporting to? Likelihood Ratio 9.438 3 0.024 nglish (United States) Ex Accessibility: Investigate Focus Descriptive StatISTICS 1.(1/2) State the hypotheses for this test