Question

Catherine has a number cube that has 6 faces that are numbered from 1 through 6. She plans on rolling the number cube 60 times. About how many times should she expect to roll a number that is greater than 4?

Answer 1

20 times But if you wanna see how I got it, there you go

Explanation:

We are given a cube that has s 6 faces that are numbered from 1 through 6. She expect to roll a number that is greater than 4 . A number greater than 4 of dice = 5 or 6 Probability of getting 5 = Favorable event ={5}=1 Total events ={1,2,3,4,5,6}=6 So probability of getting 5 = Probability of getting 6 = Favorable event ={6}=1 Total events ={1,2,3,4,5,6}=6 So probability of getting 6 = Thus the probability of getting 5 or 6 = = = Since She plans on rolling the number cube 60 times So,she expect to roll a number that is greater than 4= =20 Hence she should expect 20 times to roll a number that is greater than 4

Answer 2

Number of possible outcome = 6

Number of outcomes greater than 4 = 2
(face with number 5 + face with number 6)

P(greater than 4) = 2/6 = 1/3

If she rolled it 60 times,
P(she will get greater than 4) = 1/3 x 60 = 20

Answer: 20 times