The ability for a study to reveal a statistically significant difference between the levels of an independent variable when one truly exists is known as power. A statistical test's power is the probability that rejecting the null hypothesis is valid. It can be calculated by the expression Power = 1 - beta where beta is the probability of a type II error.
Answer:
Experiment
Explanation:
An experiment is simply said to be a planned inquiry or an investigation. psychologist are concerned with how to describe, explain, predict, and change behavior and the use of experiment helps them achieve their goal.. Usually, psychologists does experiments to know the probability of having a cause-and-effect relationship between different variables e.g when a researcher studies on if starving yourself of sleep affects the way you perform on a swimming test. experiment is the only research method mentioned here that allows the manipulation of an independent variable to test causation
Answer:
The answer is b. group-serving bias.
Explanation:
This bias implies that a group attributes a failure to a situational condition, and a success to the group's performance (dispositional). The only difference between this and a self-serving bias, is that self-serving is <u>individual</u>.
The most common form of group-serving bias is the ingroup bias. This is, it favours the members of the group a person belongs to.
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