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 If x ?1 =1.8 , x ?2= 3.5, s1 = 0.78811 and s2 = 0.707107, what is the appropriate conclusion if ? = .05?
a. retain the null
b. reject the alternative
c. reject the null
d. none of the above
c. reject the null
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