Question

Polly uses a probability simulator to pull colored ribbons from a bag 60 times and to flip a coin 60 times. The results are shown in the tables below:

Color of Ribbon Number of Times Pulled
White 25
Green 14
Orange 21


Heads Tails
38 22


Using Polly's simulation, what is the probability of pulling an orange ribbon and the coin landing on tails?

308 over 3,600
330 over 3,600
462 over 3,600
36 over 60

Answer 1

probability of orange = (# of orange)/(# of trials) = ???

Answer 2

there are 21 orange and 60 trials

Answer 3

so 0.35

Answer 4

let's leave it as a fraction, so 21/60 which reduces to 7/20

Answer 5

ok

Answer 6

probability of tails = (# of tails)/(# of coin flips) = ??

Answer 7

22 tails/60 trails right?

Answer 8

22/60 which reduces to 11/30

Answer 9

ok..

Answer 10

now multiply out 7/20 and 11/30

Answer 11

77/600

Answer 12

hmm it looks your teacher didn't reduce the fractions

(21/60)*(22/60) = (21*22)/(60*60) = 462/3600

Answer 13

if you did reduce 462/3600, you would get 77/600

Answer 14

ok thx soo much!

Answer 15

you're welcome