A Psychologist Has Developed a Workshop Designed to Increase the Degree

question 47

Multiple Choice

A psychologist has developed a workshop designed to increase the degree of optimism that people experience. She conducts a one-tailed independent samples t test with an α = .01 to determine if the workshop in fact improves optimism scores. Group A, consisting of 16 individuals, participated in the workshop and subsequently obtained a M₁ = 92 on an optimism assessment. Group B, consisting of 13 individuals, takes the assessment without attending the workshop and obtained a M₂ = 88. If the obtained t-value was +2.33, we could conclude that

• A) the group that attended the workshop scored significantly higher on optimism than the group that didn't attend.
• B) the group that attended the workshop scored higher than the group that didn't attend, but the difference between the means was not significant.
• C) the null hypothesis should be rejected.
• D) Both "a" and "c" above are correct.

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Economic Values

The worth of goods, services, or property in terms of their ability to generate income or wealth.

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Financial products that provide a series of payments over time, often used for retirement income.

Economic Values

The worth of goods or services determined by their utility and scarcity in relation to consumer demand.

Annuities

Financial products that pay out a fixed stream of payments to an individual, typically used as part of retirement planning.