If a treatment has a very small effect, then what is a likely outcome for a hypothesis test evaluating the treatment?​Group of answer choices​A Type II error​Correctly reject the null hypothesis​A Type I error​Correctly fail to reject the null hypothesis

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?​Group of answer choices​A sample mean much different than 80 with α = .05​A sample mean near 80 with α = .05​A sample mean near 80 with α = .01​A sample mean much different than 80 with α = .01

If the outcome resulted to the rejection of the null hypothesis, it said to be statistically significant.Select one:TrueFalse

The error of rejecting a true null hypothesis is ____.Group of answer choicesa Type I errora Type II erroreither type I and Type II error, depending on the situationcommitted when not enough information is available

What is the consequence of a Type I error?​Group of answer choices​Concluding that a treatment has no effect when it really has no effect​Concluding that a treatment has no effect when it really does​Concluding that a treatment has an effect when it really does​Concluding that a treatment has an effect when it really has no effect

A sample of n = 25 individuals is selected from a population with µ = 80 and a treatment is administered to the sample. What is expected if the treatment has no effect?​Group of answer choices​The sample mean should be close to 80 and should lead you to reject the null hypothesis.​The sample mean should be very different from 80 and should lead you to reject the null hypothesis.​The sample mean should be close 80 and should lead you to fail to reject the null hypothesis.​The sample mean should be very different from 80 and should lead you to fail to reject the null hypothesis.