Statistics Probability ReTest A Day

Two coins are tossed in an experiment. Which of the following list is the sample space?

• S= {HH, HT, TH, TT}

• S= {HH, TT}

• S= { HT, TH, TT}

• S= {HH, HT, TT}

A regular 6-sided die is to be rolled once. What is the probability that a number less than 3 is rolled?

• 1/3

• 1/6

• 1/2

• 2/3

There are 3 red marbles, 4 blue marbles, 2 green marbles, and 6 clear marbles in a burlap bag. One marble is randomly pulled from the bag. What is the probability the marble was green?

• 1/2

• 1/7

• 2/15

• 2/17

These 12 shapes are put into a bag.  What is the probablity of reaching into the bag without looking and pulling out a square, NOT replacing the square and pulling out a second square?

• 1/11
• 1/9
• 1/3

There are 8 blue marbles in a bag of 20 total marbles.  What is the probablity of NOT choosing a blue marble at random from the bag?

• 40%
• 60%
• 80%
• 85%

The following M & M colors are in the bowl:
4 yellow, 6 orange, 3 green, 5 blue, 2 brown.
What is the probability of selecting a brown candy?

• 2/18
• 1/9
• 2/20
• 1/10

What is the experimental probability of the spinner landing on a section that is green or red ?

• 5/10

• 1/2

• 2/5

• 1/5

Shannon has a bag of jelly beans.

5 Green

2 Red

3 Blue

What is the theoretical probability of her selecting a red jelly bean?

• 11/33

• 2/10

• 1/5

• 23/30

A bag has 4 green marbles, 3 red, 2 blue and 1 yellow. What is the theoretical probability of pulling a red?

• 3/10

• 3/6

• 1/9

• 1/3

Members of a gym were asked if they were doing cardio (C) or strength training (S) exercises that day. If a member is chosen, what is the probability they are doing cardio?

• 17%

• 22%

• 73%

• 27%