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) The critical value of t for the claim that the difference of two means is less than zero with = 0.025 and sample sizes of nine and seven, is -2.179.

• 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) (ii) is a correct statement, but not (i) and (iii).

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Definitions:

Variance of Returns

A measure of the dispersion or spread of returns on an investment, indicating its volatility.

Investment

The practice of dispensing finances with the goal of making a profit or generating income.

Years

A unit of time equal to 365 days (or 366 days in a leap year) used to measure duration or age.

Total Dollar Return

The overall financial gain or loss on an investment, including capital gains, interest, dividends, and distributions, calculated in absolute dollar terms.