1. A Type II error is made when A. we fail to reject the null hypothesis and the

Question

1. A Type II error is made when

A. we fail to reject the null hypothesis and the null hypothesis is false.

B. we fail to reject the null hypothesis and the null hypothesis is true.

C. we reject the null hypothesis and the null hypothesis is false.

D. we reject the null hypothesis and the null hypothesis is true.

2. A Type I error is made when

A. we fail to reject the null hypothesis and the null hypothesis is false.

B. we fail to reject the null hypothesis and the null hypothesis is true.

C. we reject the null hypothesis and the null hypothesis is false.

D. we reject the null hypothesis and the null hypothesis is true.

3. A researcher is testing a hypothesis of a single mean. The critical z value for = .05 and a two-tailed test is ±1.96. The calculated test statistic value from sample data is -1.85. The decision made by the researcher based on this information is to ___________

A. reject the null hypothesis

B. fail to reject the null hypothesis

C. redefine the null hypothesis

D. change the alternate hypothesis

Explanation / Answer

1. A Type II error is made when

Ans: A. we fail to reject the null hypothesis and the null hypothesis is false.

2. A Type I error is made when

Ans: D. we reject the null hypothesis and the null hypothesis is true.

3. Ans: B. fail to reject the null hypothesis (since -1.85 lies between ±1.96)

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.