An important function of a firm’s resources manager is to track worker turnover.
ID: 3320556 • Letter: A
Question
An important function of a firm’s resources manager is to track worker turnover. As a general rule, companies prefer to retain workers. New workers frequently need to be trained and it often takes time for new workers to learn how to perform their jobs. To investigate nationwide results, a resources manager organized a survey wherein a random sample of men and women was asked how long (in years) they have worked for their current employer.
Let variable 1=number of years worked by men, and Let variable 2=number of years worked by women.
Can we infer that mean tenure between years worked by men and by women is different? (Using the 5% significance level) Assume independent samples.
Before you conduct your hypothesis test, the hypotheses for this test would be:
Null: µ1 - µ2 = 0; Alternative: µ1 - µ2 0
Null: µ1 - µ2 = 0; Alternative: µ1 - µ2 < 0
Null: µ1 - µ2 0; Alternative: µ1 - µ2 = 0
none of the above
a.Null: µ1 - µ2 = 0; Alternative: µ1 - µ2 0
b.Null: µ1 - µ2 = 0; Alternative: µ1 - µ2 < 0
c.Null: µ1 - µ2 0; Alternative: µ1 - µ2 = 0
d.none of the above
Explanation / Answer
Here we need to test whether the mean tenure between years worked by men and by women is different or not. Hence,
Our null and alternative hypotheses will be:
Null: µ1 - µ2 = 0; Alternative: µ1 - µ2 0
Option A is correct.
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