Pollsters have tracked presidential approval ratings over many decades.From 1945 to 2009, the percentage of adults who approved of the job being done by the president averaged 54%, with 36% disapproving and 10% not sure. In June 2009, an NBC/Wall Street Journal poll asked 2000 adults, "In general, do you approve or disapprove of the job Barack Obama is doing as president?" The responses were as follows: A researcher conducts a goodness of fit test to determine whether President Obama's approval ratings differ significantly from the historical average.The hypotheses tested are as follows: H₀: The population proportion that approves is 0.54, that disapproves is 0.36, and that is unsure is 0.10. H_a: The population proportions are not 0.54, 0.36, and 0.10 respectively. At a 5% significance level, what is the critical value, $\chi$²_c, for the hypothesis test?

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The Answer of Pollsters have tracked presidential approval ratings over many decades.From 1945 to 2009, the percentage of adults who approved of the job being done by the president averaged 54%, with 36% disapproving and 10% not sure. In June 2009, an NBC/Wall Street Journal poll asked 2000 adults, "In general, do you approve or disapprove of the job Barack Obama is doing as president?" The responses were as follows: A researcher conducts a goodness of fit test to determine whether President Obama's approval ratings differ significantly from the historical average.The hypotheses tested are as follows: H₀: The population proportion that approves is 0.54, that disapproves is 0.36, and that is unsure is 0.10. H_a: The population proportions are not 0.54, 0.36, and 0.10 respectively. At a 5% significance level, what is the critical value, $\chi$²_c, for the hypothesis test?

Pollsters Have Tracked Presidential Approval Ratings Over Many Decades χ\chiχ 2c, for the Hypothesis Test? A)0

Pollsters Have Tracked Presidential Approval Ratings Over Many Decades $\chi$ ²_c, for the Hypothesis Test?
A)0