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Mathematics, 08.04.2020 04:41, nathansnyder200
A news article reports that "Americans have differing views on two potentially inconvenient and invasive practices that airports could implement to uncover potential terrorist attacks." This news piece was based on a survey conducted among a random sample of 1146 adults nationwide, interviewed by telephone November 7-10, 2010, where one of the questions on the survey was "Some airports are now using 'full-body' digital x-ray machines to electronically screen passengers in airport security lines. Do you think these new x-ray machines should or should not be used at airports?" Below is a summary of responses based on party affiliation. Republican Democrat Independent TotalShould 266 302 355 923Should not 38 55 77 170Don't know/No answer 16 15 22 53Total 320 372 454 1146We want to test to determine if party affiliation and opinion are independent using the hypotheses:H0:H0: Party affiliation and opinion are independentHA:HA: Party affiliation and opinion are not independentRound all numeric answers to four decimal places.1. What is the expected value for the number of Republicans who think x-ray machines should be used at airports?2. Calculate the test statistic for this hypothesis test.? z t X^2 F =3. Calculate the degrees of freedom for this test.4. Calculate the p-value for this hypothesis test.5. What is your conclusion using alpha = .01A. Reject H0H0B. Do not reject H0H0
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