In order to determine whether or not there is a significant difference between the mean hourly wages paid by two companies (of the same industry), the following data have been accumulated.
Company A
Company B
Sample size80
65
Sample mean$16.75
$16.25
Population standard deviation$1.00
$.95
?
A point estimate for the difference between the two population means is
A. 20.
B. .50.
C. .25.
D. 1.00.
Answer: B
Business
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