Conduct a two sample t test Section 9 2 of the null hypothesis
Conduct a two-sample t–test (Section 9.2) of the null hypothesis that the two treatment means are equal for each dot plot. Use α = .05 and two-tailed tests. In the course of the test, compare each of the following with the F -tests in Exercise 10.21:
a. The pooled variances and the MSEs
b. The t - and the F -test statistics
c. The tabled values of t and F that determine the rejection regions
d. The conclusions of the t - and F -tests
e. The assumptions that must be made in order to ensure the validity of the t - and F –tests
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