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4. If you have Two tailed Z test of significance and you have a Z test...

4. If you have Two tailed Z test of significance and you have a Z test score of 2.1, and the critical region for an alpha level of .05 is 1.96, do you ___

a. fail to reject the Ho
b. reject the Ho
c. determine there is insufficient evidence to support at decision
d. consult a statistician to make a decision on a type XV error

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4. If you have Two tailed Z test of significance and you have a Z test score of 2.1, and the critical region for an alpha level of .05 is 1.96, do you ___

a. fail to reject the Ho
Answer: b. reject the Ho
c. determine there is insufficient evidence to support at decision
d. consult a statistician to make a decision on a type XV error

Table value of z at 0.05 level = 1.96

Rejection Region: Reject Ho if calculated z < -1.96 or z > 1.96

Calculated z = 2.1 falls in the rejection region

The null hypothesis is rejected.

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