Question

Use the information in this table to find the indicated probability.

Answer 1

What is the probability of selecting a donor that is blood type A-positive or is Rh-negative? Express the answer as a decimal rounded to the nearest thousandth.



0.054


0.264


0.375


0.507

Answer 2

I clicked C

Answer 3

@TheSmartOne what do you think?

Answer 4

@jim_thompson5910

Answer 5

???

Answer 6

its soooo difficult this question!!

Answer 7

try to use van diagram

Answer 8

I'm not sure if im getting the right approach lol

Answer 9

though

Answer 10

this how i see it
P(A negative or RH negative)= P(A negative) +P(RH negative )- P(A negative and RH negative)

Answer 11

find how many people have type A positive blood. Call this x
find how many people have Rh negative blood. Call this y
find how many people have BOTH type A and have Rh negative blood. Call this z

compute `x+y-z`. Then divide this result by the total number of people

@xapproachesinfinity has the right idea when he wrote out `P(A negative or RH negative)= P(A negative) +P(RH negative )- P(A negative and RH negative)`

Answer 12

A negative i meant blood type A negative

Answer 13

although, it should be A positive and not A negative

Answer 14

oh yeah sorry blind error haha

Answer 15

D:

Answer 16

I have to wait for my tutor...cuz im getting confused!!

Answer 17

lol

Answer 18

i was never good at probability haha

Answer 19

mee neither :(

Answer 20

actually all of math....its not my thing ..lol!!

Answer 21

find how many people have type A blood. Call this x
find how many people have Rh negative blood. Call this y
find how many people have BOTH type A and have Rh negative blood. Call this z

compute `x+y-z`. Then divide this result by the total number of people

see the attached image

Answer 22

My first thought upon seeing the problem you've posted: "This is a case of conditional probability." Familiar with that?