Construct and Interpret Confidence Intervals About the Population Mean Difference $90 \%$

question 36

Multiple Choice

Construct and Interpret Confidence Intervals about the Population Mean Difference of Matched -Pairs Data
-Seven randomly selected plants that bottle the same beverage implemented a time management program in hopes of improving productivity. The average time, in minutes, that it took the companies to produce the same quantity of bottles before and after the program are listed below. Assume the two population distributions are normal. Construct a $90 \%$ confidence interval for $\mu _ { d }$ . Assume that the paired data came from a population that is normally distributed.

• A) \(( 0.21,10.93 )\)
• B) \(( 1.60,9.54 )\)
• C) \(( - 0.22,11.36 )\)
• D) \(( - 22,33.3 )\)

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Definitions:

Social Norms

Unwritten rules that govern the behavior of people in a society.

Internal Attribution

The inference that a person is behaving in a certain way because of something about the person, such as attitude, character, or personality.

Birth Cohorts

Groups of individuals born during the same period who experience similar historical and social conditions.

Internal Attribution

The process of ascribing the cause of a behavior to personal aspects such as personality, disposition, or attitude.