A researcher conducts an experiment to evaluate a treatment that is expected to increase the scores for individuals in a population which is known to have a mean of 80. Which of the following is the correct statement of a directional null hypothesis for this scenario? a. H0: μ = 80 b. H0: μ > 80 c. H0: μ < 80 d. H0: μ ≤ 80

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A researcher conducts an experiment to evaluate a treatment that is expected to increase the scores for individuals in a population which is known to have a mean of 80. Which of the following is the correct statement of a directional null hypothesis for this scenario?
a.
H0: μ = 80
b.
H0: μ > 80
c.
H0: μ < 80
d.
H0: μ ≤ 80
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