Module 11

Question 1

Assertion or conjecture concerning one or more populations

Answer 1

Statistical Hypothesis

Question 2

-H0; Hypothesis that is being tested
-represents what the experimenter doubts
to be true

Answer 2

Null Hypothesis

Question 3

• Ha or H1; operational statement of the
  theory that the experimenter believes to be
  true and wishes to prove
• it is the contradiction of the null hypothesis

Answer 3

Alternative Hypothesis

Question 4

• Test where the alternative hypothesis specifies a one directional difference for the parameter of interest

Answer 4

One-Tailed Hypothesis

Question 5

Test where the alternative hypothesis does
not specify a directional difference for the
parameter of interest

Answer 5

Two-Tailed Test of Hypothesis

Question 6

Statistic whose value is calculated from
sample measurements and on which the
statistical decision will be based

Answer 6

Test Statistics

Question 7

• Set of values of the test statistic for which
  the null hypothesis will be rejected
• “rejection region”

Answer 7

Critical Region

Question 8

Set of values of the test statistic for which
the null hypothesis will not be rejected

Answer 8

Acceptance Region

Question 9

Error made by rejecting the null hypothesis
when it is true; denoted by α

Answer 9

Type I Error

Question 10

Error made by accepting (not rejecting) the
null hypothesis when it is false; denoted by β

Answer 10

Type II Error

Question 11

is the maximum probability of type I error
that the researcher is willing to commit

Answer 11

LEVEL OF SIGNIFICANCE