3 years ago

Which option below best describes the difference between an experiment and an observational study?

1 answer:

5 0

An observation study is where nothing changes and you record what is seen. An experimental study you have a control group and a testable group.

The answer would be: .C. The groups in an experiment are chosen at random, but not in an observational study.

You might be interested in

stira [4]

3/25 I hope I helped

7 0

3 years ago

Margarita [4]

Well I would say it is 25+25+1=51

4 0

3 years ago

Sati [7]

Answer: the percent of the students at this university are foreign = 30%

Step-by-step explanation:

Given: Probability that college students are foreign students who also smoke: P(S|F)=0.12

Probability that foreign college students smoke P(S∩F)=0.4

The probability that the students at this university are foreign :

$P(F)=\dfrac{P(S\cap F)}{P(S|F)}$ [By conditional probability formula]

$=\dfrac{0.12}{0.4}\\\\=0.3$

Hence, the percent of the students at this university are foreign = 30%

6 0

3 years ago

lana [24]

All you have to do is divide 1/2 from both sides to leave a by itself , you will get 1.2

3 0

3 years ago

Semmy [17]

Answer:

5.911334

Step-by-step explanation:

4 0

3 years ago