Suppose You Want to Estimate the Difference Between Two Population $\mathrm { n } _ { 1 } = \mathrm { n } _ { 2 } = 62$

question 4

Multiple Choice

Suppose you want to estimate the difference between two population means correct to within 2.5 with probability 0.95. If prior information suggests that the population variances are both equal to
The value 20, and you want to select independent random samples of equal size from the
Populations, how large should the sample sizes be?

• A) \(\mathrm { n } _ { 1 } = \mathrm { n } _ { 2 } = 62\)
• B) \(\mathrm { n } _ { 1 } = \mathrm { n } _ { 2 } = 18\)
• C) \(\mathrm { n } _ { 1 } = \mathrm { n } _ { 2 } = 25\)
• D) \(\mathrm { n } _ { 1 } = \mathrm { n } _ { 2 } = 44\)

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Definitions:

US

Abbreviation for the United States, a country in North America.

UR

An unconditioned response, which is an automatic reaction to a stimulus not learned through previous exposure.

CR

A shared abbreviation that could stand for "Classical Conditioning" in psychology, involving learning through association, if no specific context is given.

Multiculturalism

A policy or ideology that promotes the presence and equal participation of diverse cultural, ethnic, and religious groups within a society.