Question

Students of Keystone/K12! Many points

Answer 1

It is very easy. To find the experimental probability of each, you have to divide the number for each color by 1000. Then, multiply it by 20 to find the amount expected out of 20.

Blue: 307 / 1000 = 0.0307    0.0307 × 20 = 6.14

Green: 642 / 1000 = 0.642   0.642 × 20 = 12.84

Yellow: 51 / 1000 = 0.051       0.051 × 20 = 1.02

Answer 2

Blue

P(blue) = 307 / 1000 = 0.307

Green

P(Green) = 642/1000 = 0.642

Yellow

P(Yellow) = 51/1000 = 0.051

To make the denominator 20, you are going to have to divide both numerator and denominator by 50. 1000/50 = 20

Blue= 307/50 = 6.14; P(blue) 6.14/20

Green = 642/50 = 12.84; P(blue) = 12.84 / 20

Yellow = 51/50 = 1.02; P(yellow) = 1.02/20

Check

Add these three together

1.02 + 12.84 + 6.14 = 20 as it should.