Multiple choiceSolutiona STRONGER Both slope and correlation

Multiple choice.

Solution

a)

STRONGER. Both slope and correlation would increase.

As you can see, it seems that only the X point in the graph does not follow the trend.

b)

Yes, restricting the study to non-human animals would justify it.

In this case, you would just like to study non-humans.

c)

Strong. We know because r^2 = 86.5%, which is close to 100%.

d)

INCREASE by about 12.98 days.

[Increase, becasue the slope is positive]

e)

As

Gestation^ = 93.1373 + 12.9799LifeExp

Then

Gestation^ = 93.1373 + 12.9799*(30) = 482.5343 DAYS [ANSWER]