Question

Assume that there are three airlines from which to choose, each with a number of flights per day, and an on-time percentage shown below. (Assume that delays occur randomly.) A traveler selects a flight at random, and it arrives on time.
Airline Num.~of Flights On-Time Perc.
East-West Air 4 60
Air One 3 50
International Air 6 80

(1) What is the probability that the traveler flew on East-West Air?


(2) What is the probability that the traveler flew on Air One?


(3) What is the probability that the traveler flew on International Air?

Answer 1

@dan815

Answer 2

i r here!

Answer 3

:D

Answer 4

okay so its on time

Answer 5

East-West Air 4 60 Air One 3 50 International Air 6 80

Answer 6

4*0.6 = on time east -west air

4*0.6 + 3*0.5 + 6*0.8 = every on time flight

4*0.6/(4*0.6 + 3*0.5 + 6*0.8 ) is on time west air out of all the possible on time flights

Answer 7

same method for the rest

Answer 8

I didn't think about it like that ;(

Answer 9

xD its been the same kind of question for the last 3 ones lol

Answer 10

but now it makes sense to why you multiplied the number of flights

Answer 11

infact we did a same one yesterday too i think

Answer 12

similar one but not the same

Answer 13

ive had a long day so it blurs together

Answer 14

its all
P(B|b)

Answer 15

hehe its okay

Answer 16

so for east-west it should be 2.6/8.9

Answer 17

@dan815 ?

Answer 18

it says not correct

Answer 19

8/29

Answer 20

make sure u plug into calculator right

Answer 21

Got the first one, the second one should be 15/87 and im working on the third right now

Answer 22

its right :D thanks

Answer 23

(: