A researcher finds that the mean difference in productivity between employees working the morning shift (n = 16) and the night shift (n = 10) is 5.0 units, and the estimates standard error for the difference is 2.7 units. If the null hypothesis states that there is no difference in productivity, then is this result significant at a .05 level of significance for a two-tailed test?
A. Yes, this result is significant.
B. No, this result is not significant.
C. There is not enough information to answer this question.
Ans: B
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