Jeff and susan were participants in a research study examining the influence of stimulants on memorization abilities. jeff was given coffee that had caffeine in it while susan was given decaffeinated coffee. they each had to memorize a list of words. jeff:

Then they each had to memorize a list of words. Jeff  "was placed in the experimental group".

In an experiment, information from an experimental group is contrasted and information from a control group.  

group is the gathering that gets a test strategy or a test.  

This group is presented to changes in the independent variable being tried. The estimations of the independent factor and the outcome on the dependent variable are recorded. An examination may incorporate various experimental groups at one time.

Explanation:They each had to memorize a list of words. Jeff:

which statement best describes why a government’s actions are important in macroeconomics? check all that apply.

1 government controls industry through policy.

2 government is both a consumer and a producer.

3 government can prevent changes and challenges.

4 government can use policy to influence the economy.

5 government can accurately predict economic trends.

1 , 2 & 4 for edgenu

according to this graph, how does supply behave in the long run?

a ]output remains constant.

b ]output increases.

c ]output cannot be predicted.

d ]output decreases.

the answer is a ]   for edgenu

can you explain a little further maybe give multiple choice? ?