Question

A researcher selects an alpha level of 0.15 for a study. What does this indicate about the statistical analysis of the study?

the researcher is willing to accept a 15% chance that the null hypothesis will be rejected incorrectly

the study results are likely to reveal a high level of clinical significance of the alternative hypthesis

there is a high probability of making a type one error

the researcher is willing to accept an 85% chance that the null hypothesis will be correct

Answer 1

Alpha error means even though the null hypothesis is correct ,it is rejected. So alpha error of 15% means that the null hypothesis will be rejected incorrectly in 15% of the cases even through it is true.So the clinical significance of the alternative hypothesis is decreased.