a researcher is conducting 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.The results will be examined using a one-tailed hypothesis test.Which of the following is the correct statement of the null hypothesis?? A) $$\mu 80$$ B)$$\mu \geq 80$$ C) $$\mu

Question

a researcher is conducting 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.The results will be examined using a one-tailed hypothesis test.Which of the following is the correct statement of the null hypothesis??
A) $$\mu > 80$$
B)$$\mu \geq 80$$
C) $$\mu < 80$$
D)$$\mu \leq 80$$

Quizplus · Accepted Answer

Since the researcher expects the treatment to increase scores, the null hypothesis should state that the mean of the population is equal to or less than 80. This is because the alternative hypothesis would state that the mean is greater than 80. Therefore, the correct null hypothesis is D) μ ≤ 80.

A Researcher Is Conducting an Experiment to Evaluate a Treatment μ>80\mu > 80μ>80

A Researcher Is Conducting an Experiment to Evaluate a Treatment $\mu > 80$