A Test of Spelling Ability Is Given to a Random

question 12

Essay

A test of spelling ability is given to a random sample of 10 students before and after they completed a spelling course. The mean score before the course was 119.60 and after the course the mean score was 130.80. The standard deviation of the difference was 16.061. Assume that the difference in scores is normally distributed.
-Setup the null and alternative hypothesis to test the claim that the test score is not affected by the course.

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Definitions:

Intraocular Pressure

The fluid pressure within the eye, essential for maintaining the eye’s shape and optimal optical properties but can lead to glaucoma if elevated.

Glaucoma

A group of eye conditions that can cause blindness due to damage to the optic nerve, often associated with high intraocular pressure.

Aqueous Humor

A liquid produced by the eye’s ciliary body that fills the space between the cornea and the lens.

Amblyopia

Often referred to as "lazy eye," a vision development disorder where an eye fails to achieve normal visual acuity, usually due to poor eye coordination or focusing.