I If the Null Hypothesis States That There Is No

question 110

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:

Like Terms

Algebraic terms that have the same variable parts and powers.

Collect

Refers to gathering or bringing things together from multiple sources.

Like Terms

Terms in an algebraic expression that have the same variables raised to the same power, which can be combined or simplified.

Operation Indicated

The process of performing the mathematical operation (such as addition, subtraction, multiplication, or division) as specified by the given problem.