Question

Research shows that the probability of dying from heart disease is 0.45 and the probability of dying from cancer is 0.22.

a) What is the probability that a death was due to either heart disease or cancer?
b) What is the probability that a death was due to some other cause?

Answer 1

Heart disease OR cancer.
So the probability of dying from heart disease is 0.45.
The probability of dying from cancer is 0.22.

To do a, you want to add the probability of dying from heart disease and the probability of dying from cancer.

Answer 2

So what do you think the answer is for a?

Answer 3

.66?

Answer 4

or 66%

Answer 5

Be careful.
0.45 + 0.22 does not give you 0.66. :)

Answer 6

Then what is it? o_O

Answer 7

67

Answer 8

.67* :)
.67 can be written as 67%
So 67% is the answer to a.

Answer 9

so b would be 100-67 right

Answer 10

Now for b. What is the probability that a death was due to some other cause?
Well. We already know that 67% of the total people died from heart disease or cancer.
So what percent do you think died from OTHER causes?

Answer 11

Great! :)

Answer 12

33%

Answer 13

Yes! Good job!
I hope this help! :)

Answer 14

Ahh you are so good. thank you so much