I am unsure on how to start this problem:

(16 points) 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 1131 adults nationwide, inteNiewed by telephone November 710, 2010, where one of the questions on the survey was " Some airports are now using 'fullbody' digital xray 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 Total Should 262 298 350 910 Should not 37 55 76 168 Don't know/No answer 16 15 22 53 Total 315 368 448 1131 We want to test to determine if party affiliation and opinion are independent using the hypotheses: H0 : Party affiliation and opinion are independent H A : Party affiliation and opinion are not independent Round all numeric answers to four decimal places. 1. What is the expected value for the number of Republicans who think xray machines should be used at airports? 2. Calculate the test statistic for this hypothesis test. 7 ' = 3. Calculate the degrees of freedom for this test. 4. Calculate the p-value for this hypothesis test