Question

whats the answer

Answer 1

Good question, what's the question

Answer 2

In which of the scenarios can you reverse the dependent and independent variables while keeping the interpretation of the slope meaningful?

Answer 3

Meaningful meaning the same or valid?

Answer 4

There is only one case where they would be the same.

Answer 5

meaning the same

Answer 6

As the number of cigarettes smoked in a day increases, the risk for lung cancer increases.

Answer 7

As the age of an infant increases, the height of the infant increases.
As the number of vehicles in a city increases, the amount of pollution in the city increases.

Answer 8

As the concentration of salt in water increases, the density of water increases.
As the number of calls made by a cell phone increases, the cell phone bill amount increases.

Answer 9

those are the choices from A-D

Answer 10

Do you still want to solve the first question?

Answer 11

yes

Answer 12

or these are the answers to the first question?
Do you choose a single answer or all that apply?

Answer 13

a single one in these are the choices for the first question

Answer 14

Actually, "meaningful" should be taken to mean valid or logical.

Take the first choice:
"As the number of cigarettes smoked in a day increases, the risk for lung cancer increases."
independent variable: number of cigarettes smoked in a day
dependent variable : risk of cancer
If we reverse the two variables, then the statement reads:
"As the risk for lung cancer increases, the number of cigarettes smoked in a day increases."
Is the last statement logical, does it mean the same thing as the original statement?
The answer is no. Risk for lung cancer is not solely due to smoking, so there may be other factors than smoking. So reversing the variables will not make sense, or not meaningful.

So use the same process on each of the choices until you find one which remains "meaningful" even after reversing the variables.

Answer 15

Which pair of events is dependent?

Answer 16

You get a head and a tail in two coin tosses with two different coins.
You get a head and a tail in two coin tosses using the same coin twice.

Answer 17

You pick two numbered billiard balls from a bag of balls one after the other without replacement.
You draw two red cards one after the other with replacement.

Answer 18

Most, if not all, random experiments without replacement are dependent.

Answer 19

A container has 50 electronic components, of which 10 are defective.
If 6 components are drawn at random from the container, what is the probability that at least 4 are good?

Answer 20

0.26
0.42

Answer 21

0.75
0.91

Answer 22

1.00

Answer 23

i say 1.00