QBA Ch. 9 Quiz Questions

The sum of the values of a and b

none of these alternatives is correct

The level of significance in hypothesis testing is the probability of

rejecting a true null hypothesis

A two-tailed test is performed at 95% confidence. The p-value is determined to be 0.09. The null hypothesis

should not be rejected

In hypothesis testing if the null hypothesis is rejected,

the alternative hypothesis is true

Which of the following does not need to be known in order to compute the p-value?

the level of significance

If the level of significance of a hypothesis test is raised from .01 to .05, the probability of a Type II error

will decrease

The probability of making a Type I error is denoted by

a

For a lower tail test, the p-value is the probability of obtaining a value for the test statistic

at least as small as that provided by the sample

As the test statistic becomes larger, the p-value

gets smaller

In order to test the following hypotheses at an a level of significance H0: m \le≤ 800 Ha: m > 800 the null hypothesis will be rejected if the test statistic Z is

greater than or equal to Za