Six months after a significant staffing change the rate of product returns at a

Question

Six months after a significant staffing change the rate of product returns at a retail outlet is compared to the rates before the change. The alpha value is set at 0.05 and the critical value is +/-2.75. The test statistics is 1.33. What conclusion should be you draw? Six months after a significant staffing change the rate of product returns at a retail outlet is compared to the rates before the change. The alpha value is set at 0.05 and the critical value is +/-2.75. The test statistics is 1.33. What conclusion should be you draw?

Explanation / Answer

Ans:

Given that

Test statistic=1.33

critical values=+/-2.75

(so,we will reject null hypothesis,if test statistic<-2.75 or test statistic>2.75)

As,test statistic=1.33<2.75 i.e. test statistic does not fall in critical region,so we fail to reject null hypthesis.

So,Test results are non significant and we can conclude that rate of product returns  after staffing change is not different from the rate of product returns before the change.

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