Hypothesis Testing

Which of the following is TRUE?

• the alternative hypothesis represents the conclusion for which evidence is sought

• the statement of the null hypothesis never contains an equality

• an increase in the risk of type I error also increases the risk of a type II error

• the computed test statistic is also known as the critical value

What is the dividing point between the region where the null hypothesis is rejected and the region where it is not rejected?

• Critical region

• Acceptance region

• Critical value

• Significant region

What do you call any hypothesis which is tested for the purpose of rejection under the assumption that it is true?

• Null hypothesis

• Statistical hypothesis

• Alternative hypothesis

• Composite hypothesis

Which of the following is the basis in choosing between one-tailed test and two-tailed test?

• Null hypothesis

• Composite hypothesis

• Alternative hypothesis

• None of these

What type of test is described by the hypothesis below?

Ho: µ = 50 and H1: µ > 50

• Left-tailed test

• Right-tailed test

• Two-tailed test

• No-tailed test

What probability is associated with committing type-I error?

• β

• α

• 1 – β

• 1 – α

Which statistical error occurred if a failing student is passed by an examiner?

• Type-I error

• Unbiased decision

• Type-II error

• Fair decision

Which region of the distribution should the test statistic lie to reject the null hypothesis?

• Rejection region

• Acceptance region

• Both (a) and (b)

• Neither (a) nor (b)

In hypothesis testing, this denotes that there is no difference between two parameters.

• Alternative hypothesis

• Population proportion

• Population mean

• Null hypothesis

For the 95% confidence level, what is the value for α?

• α = .01

• α = .05

• α = .10

• α = .025