You collect information about the number of employees that arrive to work late. Employees are categorized in two groups: those hired more than 6 months ago (Group 1) and those hired less than 6 months ago (Group 2). You hypothesize that employees that were hired more than 6 months ago will have lower mean days late than those hired less than six months ago. If x̄₁ = 1.8, x̄₂ = 3.5, s₁ = 0.78811 and s₂= 0.707107, what is the appropriate conclusion if $\alpha$ = .05? A) retain the null B) reject the alternative C) reject the null none of these

Question

Quizplus · Accepted Answer

The mean days late for Group 1 (1.8) is less than for Group 2 (3.5), and given the significance level of 0.05, the data supports rejecting the null hypothesis that there is no difference in means.

You Collect Information About the Number of Employees That Arrive α\alphaα

You Collect Information About the Number of Employees That Arrive $\alpha$