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 nurses in City B you obtain the following results. Assume population variances are unknown and unequal City A City B n40 X1= $56,400 | x2=$59,500 s1 = $6,000 | s,-$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 α = 0.05. 0* 1 2 (b) What is the value of the test statistic? (Round your answer to three decimal places.) (c) What is the p-value? (Round your answer to four decimal places.) p-value- (d) What is your conclusion? Reject Ho. There is sufficient evidence to conclude thtthe salaries of staff nurses are lower in City A than in City B. O 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. Reject H0' There is insufficient evidence to conclude that the salaries of staff nurses are lower in City A than in City B. Do not reject H0. There is insufficient evidence to conclude that the salaries of staff nurses are lower in City A than in City B

Answer 1