Are nursing salaries in Tampa, Florida, lower than those in Dallas, Texas? Salary data provided by http://www.salary.com shows staff nurses in Tampa earn less than staff nurses in Dallas
(The Tampa Tribune, January 15, 2007). Supposed that in a follow-up study of 40 staff nurses in Tampa and 50 staff nurses in Dallas you obtain the following results.
Tampa Bay	Dallas
n1 = 40	n2 = 50
x1 = $56,100	x2 = $59,400
s1 = $6,000	s2 = $7,000
a. Formulate hypothese so that, if the null hypothesis is rejected, we can conclude that salaries for staff nurses in Tampa Bay are significantly lower than for those in Dallas. Use = .05
b. What is the value of the test statistic?
c. What is the p-value?
d. What is your conclusion?