A Test of Spelling Ability Is Given to a Random $\alpha$

question 123

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.Based on this information,the critical value to assess the t-test statistic for a two-sided test at $\alpha$
=) 05 is _____.

• A)1.121
• B)2.262
• C)1.613
• D)2.014
• E)2.215

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Definitions:

Adjusting

The process of adapting or becoming accustomed to new conditions, situations, or environments.

Financial Decline

A decrease in the value of an individual's, company's, or nation's financial wealth.

Widowed

The state of having lost one's spouse to death, which can affect an individual's social, emotional, and financial status.

Older Adults

Refers to individuals in the later stage of their life, typically aged 65 years and above, often focusing on retirement, health matters, and life satisfaction issues.