Chapter 8

type of test

-The symbol > points to the right and the test is​ right-tailed. -The symbol < points to the left and the test is​ left-tailed. -The symbol not equals is used for a​ two-tailed test.

The null hypothesis Ho always contains the = sign. The alternative H1 or Ha contains one of the other signs: < (less than), > (greater than) or # (not equal to). The claim may be represented by either the null hypothesis or the alternative hypothesis, whichever applies.

null and alternative

The​ _________ hypothesis is a statement that the value of a population parameter is equal to some claimed value.

null hypothesis

A​ _____________ is a procedure for testing a claim about a property of a population.

Hypothesis Test`

test statistic

The number of standard deviations (standard errors) that a sample statistic lies from a hypothesized population parameter.

Which of the following is NOT true about​ P-values in hypothesis​ testing? A. The​ P-value is an area. B. If the P is​ low, the null must go. C. The​ P-value separates the critical region from the values that do not lead to rejection of the null hypothesis. D. If the P is​ high, the null will fly.

c. The​ P-value separates the critical region from the values that do not lead to rejection of the null hypothesis. The​ P-value does not separate the critical region from the values that do not lead to rejection of the null hypothesis. The​ P-value is not a value on the horizontal​ axis, it is an area.

The​ ___________ is a value used in making a decision about the null hypothesis and is found by converting the sample statistic to a score with the assumption that the null hypothesis is true.

test statistic