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) \(\left[ \begin{array} { l l }
• 4.15 & 4.19
• \end{array} \right]\)

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Definitions:

Somatic Nervous System

A part of the peripheral nervous system that handles voluntary control of body movements through the control of skeletal muscles.

Knee-Jerk Reflex

The knee-jerk reflex is a sudden kicking movement of the lower leg in response to a sharp tap on the patellar tendon.

Interneurons

A type of neuron that transmits impulses between other neurons, especially as part of a reflex arc.

Sympathetic Nervous System

A part of the autonomic nervous system that prepares the body for action by increasing heart rate, blood pressure, and energy production.