Probabilitiy

A bag contains 1 yellow ball and 9 red balls. A ball is chosen at random from the bag. What is the BESTanswer for the probability of drawing the yellow ball?

• unlikely

• impossible

• certain

• very likely

A survey asked a group of students to choose their favorite type of pet. The results of the survey are shown in the table.

Based on this data, what is the approximate probability that a student prefers hamsters? (round to the nearest

hundredth)

• 0.18

• 0.21

• 0.16

• 0.23

Caroline flips a coin 3 times. According to the tree diagram, how many possible outcomes exist?

• 6

• 2

• 4

• 8

Nigel flips a coin 50 times and records whether it lands on heads or tails. What is the experimental probability

that the coin will land on heads?

• 1

• 27

• 27/50

• 23/50

You spin the spinner. How likely is it that the spinner lands on a yellow or red space?

• likely

• certain

• impossible

• unlikely

The probability line shows the probability of 5 chance events (A, B, C, D, and E) occurring. Which THREE

statements BEST describe the likelihood of the event occurring?

• Event A is certain to occur.

• Event E is certain to occur.

• Event D is certain to occur.

• Event B is not likely to occur.

• Event C has an even chance of either occurring or not occurring.

What is the probability that you choose a blue marble and then another blue marble, assuming you replace the

first marble?

• 1/2

• 1/24

• 3/4

• 1/16

Find the probability of spinning a 2 and rolling a 3.

• 1/14

• 1/8

• 1/48

• 1/6

7) If you make a tree diagram and then list all of the possible outcomes for flipping a coin and rolling a 6-sided

die, how many possible outcomes are there?

• 12

• 6

• 36

• 2

What is the sample space when a coin is tossed twice?

• {H, T}

• {HH, HT}

• {HH, TT, TH}

• {HH, HT, TT, TH}