A Test of Spelling Ability Is Given to a Random

question 97

Multiple Choice

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.Calculate a 99% confidence interval.

• A)(-3.13 25.53)
• B)(6.12 16.28)
• C)(-1.88 24.28)
• D)(-5.31 27.71)

---

Definitions:

Diaphoresis

Excessive sweating, often a response to heat, physical exertion, or medical conditions.

Heart Rate

The number of heartbeats per unit of time, usually expressed as beats per minute (bpm).

Opioid Analgesic

A type of medication used to relieve pain by acting on the central nervous system, derived from opiates or synthesized to mimic their effects.

Bran Cereal

A type of breakfast food made from the hard outer layers of cereal grains, high in fiber and nutrients.