Statistics Hypothesis Testing

The following are methods used to test hypotheses except:

• traditional (computed value) method
• p-value method
• confidence interval method
• survey method

What hypothesis states equality or no difference, or no relationship/effect?

• statistical hypothesis
• null hypothesis
• alternative hypothesis

What hypothesis states no equality or existence of differences, relationship, or effect?

• statistical hypothesis
• null hypothesis
• alternative hypothesis

Which hypothesis is generally formulated to look for evidence to support a claim called a research hypothesis?

• statistical hypothesis
• null hypothesis
• alternative hypothesis

In reality, the null hypothesis may or may not be true, and a decision is made to reject or not to reject it on the basis of the data obtained from a sample.

• True
• False

The level of significance is the maximum probability of committing a type II error.

• True
• False

A level of significance of 5% means:

• There's a 5% chance we're wrong
• There's a 5% chance we'll be wrong if we fail to reject the null hypothesis
• There's a 5% chance we'll be wrong if we reject the null hypothesis.
• There's a 5% chance you'll get an A on the test.

Which value separates the critical region from the noncritical region in a normal curve when testing the hypothesis?

• computed value
• t-value
• z-value
• critical value

Which of the following shows a right-tailed test?

• H₁: µ < 15
• H₀: µ < 15
• H₁: µ > 15
• H₀: µ > 15

Which of the following shows a left-tailed test?

• H₁: µ < 15
• H₀: µ >15
• H₁: µ > 15
• H₀: µ > 15