A Company Is Researching the Effectiveness of a New Website

question 93

Multiple Choice

A company is researching the effectiveness of a new website design to decrease the time to access
A website. Five website users were randomly selected, and their times (in seconds) to access the
Website with the old and new designs were recorded. To compare the times, they computed (new
Website design time - old website design time) . The results follow:
What are the null and alternative hypothesis?

• A) H0: µd = 0; H1: µd ≠ 0
• B) H0: µd ≠ 0; H1: µd = 0
• C) H0: µd ≤ 0; H1: µd > 0
• D) H0: µd ≥ 0; H1: µd ≠ 0
• E) H0: µd ≥ 0; H1: µd < 0

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Definitions:

Optic Disc

A small, circular area in the retina where the optic nerve connects to the eye, marking the point of exit for retinal nerve fibers.

Optic Nerve

A paired nerve that transmits visual information from the retina to the brain.

Retina

The light-sensitive layer at the back of the eye that converts light into neural signals that the brain interprets as visual images.

Pupil

The black circular opening in the center of the iris of the eye, which regulates the amount of light that enters the eye.