Question

A sample of 36 homeowners who recently hired a landscpaping sercived yielded the following info about their landscapper. Number of owners 22- yes would recoomend to more friends.5 would not. and 9 are not sure. 3 homeowners who provided info were selected at random. Dtermine the pro they would all recomend their landcapper. What is the pro that 3 homeowners would recomend their landscapper?

Answer 1

(33/36)(32/35)(31/34)

Answer 2

Of the one who would recommend

Answer 3

yes

Answer 4

so all them or just one?

Answer 5

that is the probability of all 3 homeowner randomly selected will recommend their landscaper

Answer 6

you just hav eto multiply the fractions

Answer 7

mulplying them all?

Answer 8

(33x32x31)/(36x35x34)

Answer 9

but it's easier to do it with factorials

Answer 10

33!/[(36-33)!(30!)]

Answer 11

crap made a mistake lol

it's 22x21x20/36x35x34

Answer 12

just think probability of first person selected that would recommend landscaper is 22/36, then second is 21/35 since 1 recommender is already picked. then 20/34 since two recommenders are already picked

Answer 13

but wouldnt it come to one answer?

Answer 14

like one fraction alone?

Answer 15

9240/42840
if u multiply the fractions i gave u then u get that

Answer 16

that is the answer

Answer 17

395841600?

Answer 18

no it's 0.2156 or 21.56%