A Test of Spelling Ability Is Given to a Random

question 27

Essay

A test of spelling ability is given to a random sample of 10 students before and after they complete 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 is 16.061.Calculate the test statistic to test the claim that scores were higher after the course.

---

Definitions:

Trustworthy

Refers to the ability to be relied on as honest or truthful.

Authentic

Genuine or real; not copied or false; true to one's own personality, spirit, or character.

Attractive

Having qualities that appeal to a sense of beauty or aesthetic preference.

Body Postures

The positions or arrangements of the body and its limbs, which can communicate nonverbal cues or affect physical and psychological states.