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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