Create a Confidence Interval for the Difference Between Two Means

question 2

Multiple Choice

Create a confidence interval for the difference between two means.
-Data were collected on annual personal time (in hours) taken by a random sample of 16
Women and 7 men employed by a medium sized company. The women took an average of 24.75 hours of personal time per year with a standard deviation of 2.84 hours. The men
Took an average of 21.89 hours of personal time per year with a standard deviation of 3.29
Hours. The correct 90% confidence interval for the difference between women and men in
The average number of hours of personal time taken per year is

• A) 0.30 to 5.48 hours.
• B) -0.50 to 3.21 hours.
• C) -4.67 to -0.62 hours.
• D) 1.27 to 6.89 hours.
• E) None of the above.

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Definitions:

Costovertebral Angle

The angle formed by the vertebral column and the downward slope of the last rib, an area often examined for tenderness accompanying kidney problems.

Cranial Nerve IX

Also known as the Glossopharyngeal nerve, it is responsible for taste and other functions of the throat (pharynx) and mouth.

Tongue Blade

A small medical tool used to depress the tongue to allow examination of the mouth and throat.

Snellen Chart

A tool used to measure visual acuity, consisting of lines of letters, numbers, or symbols in decreasing size.