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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The Answer of 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

The Population Mean for Scores on an Anxiety Scale Is