Author Question: A researcher conducts a power analysis for a study in which there was no difference between control ... (Read 117 times)

cherise1989 · **on:** Jul 8, 2018

A researcher conducts a power analysis for a study in which there was no difference between control and experimental group scores and identifies a power level of 0.75 and a level of significance of 0.05. What will this researcher do?

a. Alter measurement methods to detect larger changes in scores
b. Conclude that the null hypothesis is true
c. Consider repeating the study using a larger sample
d. Lower the level of significance to 0.01.

Question 2

The concept of degrees of freedom refers to

a. the level of significance for a study.
b. the standard deviation from the mean among data.
c. the variability of a given score based on other scores.
d. whether statistical analysis is one- or two-tailed.