Probability

1. In a bag of marbles, two-fifths are red, one-third are blue, five-ninths are green, and five-twelfths are yellow.

Which color are you most likely to select randomly?

• Green

• Blue

• Red

• Yellow

At a football game, 98 out of the first 200 people who enter the field were not wearing hats. If this sample is representative of the 650 people attending the game, about how many of them will be wearing hats?

• 331

• 318

• 0.5

• 102

The eight sided die is labeled 1, 2, 3, 4, 5, 6, 7, and 8. You flip a coin and roll the die. What is the theoretical probability that the coin lands on heads and you roll a number greater than 3? Write your answer as a fraction.

•  $\frac{5}{16}$

• $\frac{1}{4}$

• $\frac{3}{5}$

• $\frac{3}{12}$

Tina is packing for a five-day trip. Of her shirt colors, three are blue, four are white, and two are grey. Tina does not plan on wearing a t-shirt more than once. What is the probability that Tina will not wear a blue t-shirt on the first day of her trip and wear a grey shirt on the second day?

• $\frac{1}{3}$

• $\frac{2}{8}$

• $\frac{1}{6}$

• $\frac{12}{81}$

A bag contains 13 Snickers bars and 9 Twix bars, and the outcome is drawing a Twix bar. Which phrase best describes the likelihood?

• Unlikely

• As likely as not

• Likely

• Certain

A bag contains 10 Snickers bars and 9 Twix bar, and the outcome is drawing a Twix bar. Which phrase best describes the probability?

• Unlikely

• As likely as not

• Likely

• Certain

Amanda has three different colored pens in her book bag: blue, green and purple. The probability of randomly choosing a blue pen from Amanda’s book bag is 15%. The probability of randomly choosing a green pen from Amanda’s book bag is 0.35. How likely is it, in relation to 0, for Amanda to randomly choose a purple pen from her book bag.

• 5

• 50%

• 0.50

• 0.05

Amanda has three different colored pens in her book bag: blue, green and purple. The probability of randomly choosing a blue pen from Amanda’s book bag is 15%. The probability of randomly choosing a green pen from Amanda’s book bag is 0.35. What is the probability that Amanda will draw a black pen?

• 0.50

• 50%

• 0

• As likely or not

Gerald said it was almost certain that he would make an A on his math test based on how he did on his quizizz. If there were 20 questions on the Quizizz, how many do you think Gerald got correct?

• 10

• 15

• 19

• 20

Marcy is trying to estimate the number of students that have blue eyes. Out of her four classes (120 students total), she found that 23 students had blue eyes. If the school has a total of 2,500 students, how many would you expect to have blue eyes based on Marcy's data?

• 230

• 480

• 833

• 23