The Results of a Mathematics Placement Exam at Two Different

question 13

Multiple Choice

The results of a mathematics placement exam at two different campuses of Mercy College follow: What is the alternative hypothesis if we want to test the hypothesis that the mean score on Campus 1 is higher than on Campus 2?

• A)H₁: µ₁ = 0
• B)H₁: µ₂ = 0
• C)H₁: µ₁ > µ₂
• D)H₁: µ₁ ≤ µ₂

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Definitions:

Confound

To cause confusion by mixing up or failing to distinguish between different elements or variables.

Masked Variable

A variable that influences a study's outcome indirectly by affecting other variables, not easily identifiable.

Placebo

A substance with no therapeutic effect, used as a control in testing new drugs or used to induce psychological benefits purely through belief.

Matched Pair

A study design element where subjects are paired based on specific characteristics, ensuring that each pair is as similar as possible except for the variable under investigation.