Probability Worksheets

**Page 31**

301.

If a box contains more number of violet balls than pink balls, then it is ______ likely to pick a pink ball.

a. | more | ||

b. | equally | ||

c. | less | ||

d. | I don′t know. |

Correct answer : (3)

302.

There were 8 gold, 5 copper, and 13 silver coins in a box. Sam picked a coin, recorded the result, and put the coin back into the box. He did this 15 times in all. Which coin he would have picked the most?

a. | Silver | ||

b. | Copper | ||

c. | Gold | ||

d. | None of the above |

Correct answer : (1)

303.

Tim has 70% chance of winning the car race. What is the probability of Tim not winning the race?

a. | 0.45 | ||

b. | 0.55 | ||

c. | 0.65 | ||

d. | 0.3 |

Probability of Tim winning the car race =

P(not winning) = 1 -

[Substitute and simplify.]

Probability of Tim not winning the car race is 0.3.

Correct answer : (4)