I If Samples Taken from Two Populations Are Not Independent

question 62

Multiple Choice

i. If samples taken from two populations are not independent, then a test of paired differences is
Applied.
ii. The paired difference test has (n1 + n2 - 2) degrees of freedom.
iii. The paired t test is especially appropriate when the sample sizes of two groups are the same.

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

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Definitions:

Income

Monetary payment received for work, from investments, or from government benefits, contributing to an individual's wealth.

Marginal Tax Rate

The tax rate applied to the last dollar of income, showing the percentage of additional income that is paid in tax.

Income

The amount of money or value received, typically on a regular basis, for work or through investments.

Tax Rates

Tax rates refer to the percentage at which an individual or corporation is taxed on their income or property.