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
?
At the 5% level of significance, the null hypothesis
A. should be rejected.
B. should not be rejected.
C. should be revised.
D. should not be tested.
Answer: A
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Indicate whether the statement is true or false