I If the Null Hypothesis States That There Is No

question 49

Multiple Choice

i. If the null hypothesis states that there is no difference between the mean income of males and the mean income of females, then the test is one-tailed. ii. If we are testing for the difference between two population means, it is assumed that the sample observations from one population are independent of the sample observations from the other population.
iii. If we are testing for the difference between two population means, it is assumed that the two populations are approximately normal and have equal variances.

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) and (ii) are correct statements but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i), (ii), and (iii) are all false statements.

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Definitions:

Symbolic

Pertaining to symbols or symbolism; using symbols to represent ideas or qualities.

Predicate

The part of a sentence or clause that expresses what is said about the subject and is usually made up of a verb with or without objects, complements, or adverbial modifiers.

Propositions

Statements or assertions that express opinions or judgments which can be true or false.

Mental Image

a representation of sensory experience in the mind, which can be visualized despite the absence of the actual stimulus.