Exhibit 18-4 It Has Been Hypothesized That There Is No Difference in Difference

question 21

Multiple Choice

Exhibit 18-4
It has been hypothesized that there is no difference in the mathematical accuracy of men and women. A sample of men and women were given math tests. The scores on the tests are given below.
-Refer to Exhibit 18-4. The null hypothesis is to be tested at the 5% level. The decision rule is not to reject the null hypothesis if

• A)-1.96 < z < 1.96
• B)-1.645 < z < 1.645
• C)z > 1.96 or z < -1.96
• D)the number of "+" signs is greater than or equal to 2 but less than or equal to eight

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Definitions:

Primate Species

Members of the mammalian order Primates, which includes humans, apes, monkeys, and prosimians, characterized by large brains, forward-facing eyes, and dexterous hands.

Homo Floresiensis

An extinct species of small-statured humans that lived on the Indonesian island of Flores until approximately 50,000 years ago.

Hypotheses

Tentative explanations that can be tested through experimentation or observation.

Origin

The location or origin where something starts, originates, or is obtained from.