It Is Desired to Test $H _ { 0 } : \mu = 55$

question 124

Multiple Choice

It is desired to test $H _ { 0 } : \mu = 55$ against $H _ { \mathrm { a } } : \mu < 55$ using $\alpha = .10$ . The population in question is uniformly distributed with a standard deviation of 15 . A random sample of 49 will be drawn from this population. If $\mu$ is really equal to 50 , what is the power of this test?

• A) \(.3531\)
• B) \(.8531\)
• C) \(.2938\)
• D) .1469

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Definitions:

Groupthink

A process in which group members are influenced by cohesiveness and a dynamic leader to ignore external realities as they make decisions.

Prejudices

Preconceived opinions or judgments toward people, objects, or situations based on biases, without factual knowledge.

Stereotyping

Erroneous assumptions that all members of a group share the same traits or characteristics.

Attraction-Similarity Hypothesis

A theory suggesting that people are attracted to others who are similar to themselves in terms of attitudes, values, and interests.