You Are Evaluating Investing in a Cognitive Training Company

question 76

Multiple Choice

You are evaluating investing in a cognitive training company.For this reason,you want to determine whether users who complete at least 75% of the recommended daily training for two months show improved levels of reading comprehension and problem solving skills.You select a random sample of new users and get test scores for each participant in the sample.The test score is a composite of reading comprehension and problem solving skills.Two months later,you randomly select 15 users who have completed 75% or more of the recommended training for the last two months and have them take a test similar to the initial test.You are interested in determining whether the average test score before training is different than the average test score after training for this sample.The after-training average is 92.8,which is 2.7 points higher than the before-training average.The sample standard deviations of the differences is 1.2.You use a significance level of 0.10,and you can assume that the differences are normally distributed in the population.The table t-value for this test is ______.

• A) 1.761
• B) 1.746
• C) 1.753
• D) 1.345
• E) 1.339

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Definitions:

Evaluate Performance

The systematic assessment of an employee's job performance, skills, and productivity over a specific period.

Performance Standards

Defined expectations for an employee's work conduct and outcomes, against which their actual performance is measured for appraisal and improvement purposes.

Strategic Objectives

Long-term goals set by an organization to achieve its overall strategy and mission.

Criterion Contamination

In performance appraisal or research, when factors unrelated to the construct being measured affect the scores.