Conduct a two sample ttest (Section 9 2) of the null hypothesis that the two treatment means are equal for each dot plot Use 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...

For each dot diagram we want to test H 0 1 2 0 H a 1 2 0 From Exercise 1021 Diagram A Diagram B 1 9 1 9 2 14 2 14 s 1 2 2 s 1 2 144 s 2 2 2 s 2 2 144 ...

Conduct a two-sample ttest (Section 9.2) of the null hypothesis that the two treatment means are equal

Question:

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