Find out the test statistic z for the given information
Find the test statistic Z for the given information.
If the observed value is 4, expected value is 5, and the standard error is 4, then the test value used for the z test is equal to
a -1.00 b.0.25 c.-0.25 d.1.00
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An experiment was performed to enhance the yield of chemical process. Four factors were selected, and two replicates of the completely randomized experiment were run. The results are shown in following table:
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