Data Were Collected on Annual Personal Time (In Hours) Taken

question 1

Multiple Choice

Data were collected on annual personal time (in hours) taken by a random sample of 16 women (group1) and 7 men (group 2) 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 Human Resources Department believes that women tend to take more personal time than men because they tend to be the primary child care givers in the family.The correct null and alternative hypotheses to test this belief are ________________________ .

• A)H_0: µ₁ - µ₂ = 0 and H_A: µ₁ - µ₂ < 0.
• B)H_0: µ₁ - µ₂ = 0 and H_A: µ₁ - µ₂ ≠ 0.
• C)H_0: µ₁ - µ₂ = 0 and H_A: µ₁ - µ₂ > 0.
• D)H_0: µ₁ - µ₂ > 0 and H_A: µ₁ - µ₂ < 0.
• E)None of the above.

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Definitions:

Organ Of Corti

A structure located in the cochlea of the inner ear, containing hair cells that convert sound vibrations into neural signals for hearing.

Mechanoreceptors

Sensory receptors in the body that respond to mechanical pressure or distortion, important for sensing touch, pressure, stretching, sound, and motion.

Common

Occurring frequently or existing in a large amount; widespread.

Ciliary Muscle

A ring-shaped muscle in the eye that changes the shape of the lens to focus on near or distant objects.