Chapter 10.1, Problem 3E

Consider the following hypothesis test.

$\begin{array}{l}{H}_0:{\mu }_1-{\mu }_2=0\\ H_{\text{a}}:{\mu }_1-{\mu }_2\ne 0\end{array}$

The following results are for two independent samples taken from the two populations.

Sample 1	Sample 2
n1 = 80	n2 = 70
${\bar{x}}_{\text{1}}=\text{1}04$	${\bar{x}}_{\text{2}}=\text{1}0\text{6}$
σ1 = 8.4	σ2 = 7.6

1. a. What is the value of the test statistic?
2. b. What is the p-value?
3. c. With α = .05, what is your hypothesis testing conclusion?