A Researcher Was Interested in Comparing the Number of Hours

question 29

Multiple Choice

A researcher was interested in comparing the number of hours of television watched each day by two-year-olds and three-year-olds.A random sample of 18 two-year-olds and 18 three-year-olds yielded the follow data.
Find a 95% confidence interval for the difference,
-
,between the mean number of hours for two-year-olds and the mean number of hours for three-year-olds.

• A)(-0.87,0.26)
• B)(1.25,1.56)
• C)(-0.87,-0.26)
• D)(-1.56,-1.25)
• E)(-0.26,0.87)

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Definitions:

Equation Interpretation

The process of understanding the mathematical and practical significance of the parameters and variables in an equation.

Cost Of Goods Sold

The immediate expenses linked to the manufacturing of goods a company sells, encompassing costs for materials and labor.

Current Assets

Short-term assets that a company owns, which are expected to be converted into cash within one year, such as inventory, cash, and accounts receivable.

Average Collection Period

A financial metric that measures the average number of days it takes a company to collect payments from its credit sales.