A researcher administers a treatment to a sample of participants selected from a population with µ = 80.If a hypothesis test is used to evaluate the effect of the treatment,which combination of factors is most likely to result in rejecting the null hypothesis?
A)A sample mean near 80 with α = .05
B)A sample mean near 80 with α = .01
C)A sample mean much different than 80 with α = .05
D)A sample mean much different than 80 with α = .01

Question

A researcher administers a treatment to a sample of participants selected from a population with µ = 80.If a hypothesis test is used to evaluate the effect of the treatment,which combination of factors is most likely to result in rejecting the null hypothesis?​
A)​A sample mean near 80 with α = .05
B)​A sample mean near 80 with α = .01
C)​A sample mean much different than 80 with α = .05
D)​A sample mean much different than 80 with α = .01

Quizplus · Accepted Answer

A sample mean significantly different from the population mean (µ = 80) with a higher alpha level (α = .05) increases the likelihood of rejecting the null hypothesis because it indicates a more substantial effect of the treatment and a higher tolerance for Type I error.

A Researcher Administers a Treatment to a Sample of Participants