Sample surveys on sensitive issues can give different results depending on how the question is asked. a study divided 2400 respondents into 3 groups at random. all were asked if they had ever used cocaine. one group of 800 was interviewed by phone; 22% said they had used cocaine. another 800 people were asked the question in a one-on-one personal interview; 28% said "yes." the remaining 800 were allowed to make an anonymous written response; 29% said "yes."(a) make a two-way table of answers (yes or no) by survey method. yes nophone one-on-one anonymous (b) can we safely use the chi-squared test? no, we can not safely use the chi-squared test because the study does not randomly assign the subjects to the interview types, although all expected counts are greater than 5.0.yes, we can safely use the chi-squared test because the study randomly assigns the subjects to the interview types, and all expected counts are greater than 5.0. yes, we can safely use the chi-squared test because the study randomly assigns the subjects to the interview types, although more than 20% of the expected counts are smaller than 5.0.no, we can not safely use the chi-squared test because the study did not randomly assign the subjects to the interview types, and more than 20% of the expected counts are smaller than 5.0.what null and alternate hypotheses does χ2 test? h0: some proportions are differentha: some proportions are equalh0: all proportions are differentha: some proportions are equal h0: all proportions are equalha: some proportions are differenth0: some proportions are equalha: some proportions are differentwhat are the degrees of freedom for this test? df = (c) compute the chi-squared component for each cell and give χ2. use this table or software to obtain the p-value of the test. (round your answer to two decimal places.)χ2 = p-value: 0.0005 < p < 0.00100.0010 < p < 0.0025 0.0025 < p < 0.0050.005 < p < 0.0100.010 < p < 0.020(d) what do you conclude from these data? there is not sufficient evidence to conclude that the contact method makes a difference in response. there is significant evidence that the contact method makes a difference in response.