Question

Method A: 14 newly-hired employees take a 3-day seminar

Method B: Second group of 11 newly-hired employees for a two-day video training  

Which method yields better test scores?

Sample stats for the post-training test scores of the separate groups are provided below.

	A	B
x̄	48.126	55.171
s	19.307	18.262

Determine at the α = 0.05 level if there is a significant difference in the mean scores of the two groups.

1. Compute the test statistic tobs (with work)

2. Find the degrees of freedom for the test statistic tobs (with work)

3. Determine the critical value for the hypothesis test (with work)

4. Indicate the result of the test (reject H0 or fail to reject H0) and state your conclusion in the context of the question of interest

Answer 1