Researchers Studied the Role That the Age of Workers Has

question 94

Multiple Choice

Researchers studied the role that the age of workers has in determining the hours per month spent on personal tasks.A sample of 1,686 adults were observed for one month.The data are: $\begin{array}{ccc}&&\text { AGE GROUP }\\& \underline{18-24} & \underline{25-44} & \underline{45-64} \\\text { Mean }& 4.17 & 4.04 & 4.31 \\\text {Std Dev}&0.75 & 0.81 & 0.82 \\\text {N}&241 & 768 & 677\end{array}$
Construct an 88 percent confidence interval for the mean hours spent on personal tasks for 18-24 year olds.

• A) \(\left[ \begin{array} { l l }
• 4.09 & 4.25
• \end{array} \right]\)
• B) \(\left[ \begin{array} { l l }
• 4.11 & 4.23
• \end{array} \right]\)
• C) \(\left[ \begin{array} { l l }
• 4.08 & 4.26
• \end{array} \right]\)
• D) \(\left[ \begin{array} { l l }
• 4.14 & 4.20
• \end{array} \right]\)
• E) \(\left[ \begin{array} { l l }
• 4.15 & 4.19
• \end{array} \right]\)

---

Definitions:

Mashed Foods

Foods that have been crushed or ground into a soft, smooth consistency, commonly prepared for infants or individuals with difficulty chewing.

Bananas

A type of fruit that is elongated and curved, with soft flesh rich in starch covered by a rind, which may be green, yellow, or brown when ripe.

Peas

Small green seeds or the seed-pods of the Pisum sativum plant, commonly eaten as a vegetable.

Harry Harlow

A renowned psychologist known for his research on maternal separation and social isolation in rhesus monkeys.