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In polis conducted in 2001, 2004, and 2010, respondents were asked whether they favor or oppose mandatory testing of students in public schools each year to determine how well the school is educating students. The following 3 x 3 table of counts was estimated from percentages reported at the poller's website. Mandatory Testing? Year Favor Oppose Don't Know/No Answer Total 2001 9981 194 23 1,215 2004 725 254 40 1,019 2010 770 260 53 1,083 Total 2,493 708 116 3,317 LAUSE SALT (a) Determine row percentages. (Round your answers to one decimal place.) Mandatory Testing? Oppose Year Favor Don's Know/No Answer M 2001 N 2004 M IN 2010 Use the row percentages to compare responses in the three different years.
Use the row percentages to compare responses in the three different years. O All three years' responses look considerably different from one another. O The responses in 2004 look considerably different from the responses in 2001 and 2010. O The responses in 2001 look considerably different from the responses in 2004 and 2010. There are no noticeably large differences in the responses for all three years. The responses in 2010 look considerably different from the responses in 2001 and 2004. (b) Write null and alternative hypotheses for comparing opinions in the three different years. O Ho: There is a weak relationship between the year and opinion on mandatory testing. H: There is a strong relationship between the year and opinion on mandatory testing. Ho: Proportions of the population with each opinion on mandatory testing remained the same over the three years. H: Proportions of the population with each opinion on mandatory testing did not remain the same over the three years. O Ho: Proportions of the sample with each opinion on mandatory testing remained the same over the three years. H: Proportions of the sample with each opinion on mandatory testing did not remain the same over the three years. O Ho: There is a strong relationship between the year and opinion on mandatory testing. on mandatory testing. H₂: There is a weak relationship between the year and opinion o O Ho: Proportions of the population with each opinion on mandatory testing did not remain the same over the three years. H: Proportions of the population with each opinion on mandatory testing remained the same over the three years. (c) Calculate the value of the chi-square statistic in this situation. (Round your answer to two decimal places.) (d) What is the value of degrees of freedom for the chi-square statistic? df =
(c) Calculate the value of the chi-square statistic in this situation. (Round your answer to two decimal places.) x² = [ (d) What is the value of degrees of freedom for the chi-square statistic? df = (e) Determine the p-value in this situation. (Round your answer to three decimal places.) p-value (f) Is the result statistically significant? Explain how you know. (Use a Io.05.) The resultSelect statistically significant because the p-value is Select t (9) In the context of this situation, write a conclusion. The data Select that the Select proportions favoring, opposing, and having no opinion on mandatory testing was not the same in all three years. Need Help? Read It