Effect size is one of the two major factors that contribute to power. another factor is:

Effect size is one of the two major factors that contribute to power. Another factor is the number of scores in the sample.

Explanation:

As far as the power of a statistical tests are concerned, there are two major factors that directly affect it. These factors are namely the 'effect size' and 'number of scores'.

The bigger the effect size, greater is the power of the test. Also, the greater the number of score in the test sample, greater is its power.

there are treatment options for depression (mdd) that may work for you. one way of treating depression may be to affect the levels of certain chemicals that brain cells use to communicate, called neurotransmitters. scientists believe that certain neurotransmitters may be out of balance in depression.

although the exact way depression medications shown to ease overall depression symptoms in some people work is unknown, scientists think that some medications work by affecting the levels of a neurotransmitter called serotonin in the brain. other treatments work by affecting the levels of other neurotransmitters like norepinephrine or dopamine.

the first question's answer is a.