Dr. Green examines the effect of cognitive coping training on stress levels. She randomly assigns half of her sample to training in which they are taught to calm themselves down by thinking optimistically, and by making positive statement to themselves. The other half of the sample are not given the cognitive coping training. A survey is used to assess the stress levels of the study participants. What is her independent variable?

The correct answer is B. Cognitive coping training

Explanation:

In a research study or experiment, the independent variable can be identified by answering questions such as what is the variable the researcher manipulates? or which variable is expected to affect another?. In Dr. Green's study, the factor she is manipulating is cognitive coping training because half of the participants are exposed to this training, and the other half are not exposed.

Also, the purpose of this study is to "examine the effect of cognitive coping training on stress levels", which shows cognitive coping training is independent as this is not affected by other variables and it is expected it affects the second variable or stress level. According to this, her independent variable is cognitive coping training.

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.