The Population Mean for Scores on an Anxiety Scale Is

question 33

Multiple Choice

The population mean for scores on an anxiety scale is 28. A researcher obtains a representative sample and implements a treatment designed to decrease anxiety scores. A one-sample t test is conducted. What is the null hypothesis?

• A) H₀: μ = 28
• B) H₀: μ ≠ 28
• C) H₀: μ ≤ 28
• D) H₀: μ ≥ 28

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