Stats and Prob

What is the statistical method used in making decisions using experimental data?

• Simple analysis

• Analytical testing

• Hypothesis testing

• Experimental testing

Which of the following describes an alternative hypothesis using two tailed test?

Which of the following would be an appropriate null hypothesis?

• The mean of a population is not equal to 75.

• The mean of a population is equal to 75.

• The mean of a sample is not equal to 75.

• The mean of a population is greater than 75.

When is a Type I error committed?

• We reject a null hypothesis that is false.

• We reject a null hypothesis that is true.

• We fail to reject a null hypothesis that is true.

• We fail to reject a null hypothesis that is false.

When is a Type II error committed?

• We reject a null hypothesis that is false.

• We reject a null hypothesis that is true.

• We fail to reject a null hypothesis that is true.

• We fail to reject a null hypothesis that is false.

Which of the following is a Type I error?

Which of the following would be an appropriate alternative hypothesis for one-tailed test?

Which of the following describes an alternative hypothesis using two tailed test?

Which of the following population parameters is used as symbol for the mean or average population?

Which of the following statements best describes a parameter?

• It describes the sample.

• It describes the researcher.

• It describes the hypothesis.

• It describes the population.