You may need to use the appropriate technology to answer this question. Are nursing salaries in City A lower than those in City B? As reported by a newspaper, salary data show staff nurses in City A earn less than staff nurses in City B. Suppose that in a follow-up study of 40 staff nurses in City A and 50 staff obtain the following results. Assume population variances are unknown and unequal. City A City B n, =40 72 = 50 X, = $56,500 X, = $59,500 $1 = $6,000 $2 = $7,000 (a) Formulate hypotheses so that, If the null hypothesis is rejected, we can conclude that salaries for staff nurses in City A are significantly lower than for those in City B. Use a = 0.05. Ho: 1 - H2= 0 H: M 1 - H2 O Ho: H1 - H2 $ 0 HM - H2 =0 HO H1 - H2> 0 H: 1 - H 2 = 0 (b) What is the value of the test statistic? (Round your answer to three decimal places.) (c) What is the p-value? The degrees of freedom for this test are 87. (Round your answer to four decimal places.) p-value - (d) What Is your conclusion? Do not reject Ho. There is Insufficient evidence to conclude that the salaries of staff nurses are lower in City A than in City B. O Reject H. There is sufficient evidence to conclude that the salaries of staff nurses are lower in City A than in City B. Reject Ho. There is Insufficient evidence to conclude that the salaries of staff nurses are lower in City A than in City B. Do not Reject Ho. There is sufficient evidence to conclude that the salaries of staff nurses are lower in City A than in City B. Submit