Are teachers salaries in Orlando, Florida, lower than those in Houston, Texas? Suppose
that a study of 46 teachers in Orlando and 58 teachers in Houston gave the following results:
	Orlando			Houston
	n1 =	46		n2 =	58
	x1 =	57750		x2 =	61500
	s1 =	6000		s2 =	6700
a. State the null and alternative hypotheses.
b. Provide a 95% confidence interval for the difference between the mean salaries of
teachers in Orlando and Houston
c. What is the value of the test statistic?
d. What is the p-value?
e. What is your conclusion?