Probability Experimental and Theoretical

A nickel is tossed 840 times and heads came up 400 times. What is the experimental probability of tossing tails?

• 10/21

• 5/11

• 11/21

• 3/5

What is the probability of spinning an even number?

• 30%

• 33%

• 50%

• 67%

If you choose from the following M & M colors, what is the probability that you choose blue? **Remember to simplify**

• 8/18

• 4/13

• 8/25

• 1/3

What is the Theoretical Probability of NOT landing on red?

• 25%

• 50%

• 65%

• 66.7%

Which table shows an experimental probability of landing on tails that is closest to the theoretical probability of landing on tails?

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The spinner has 4 sections of equal size labeled T, V, W, and X. The arrow of this spinner was spun 10 times and landed 6 times on the section labeled T. Which statement best describes the experimental probability and theoretical probability of the arrow landing on the section labeled T?

• The experimental probability is 1/4, and the theoretical probability is 3/5.

• The experimental probability is 3/5, and the theoretical probability is 1/4.

• The experimental probability is 3/5, and the theoretical probability is 3/5.

• The experimental probability is 1/4, and the theoretical probability is 1/4.

If the spinner was spun 50 times and landed on 11 fifteen times, which statement is true?

• The experimental probability of landing on 11 is 1/8 while the theoretical probability of landing on 11 is 3/10

• The theoretical probability of landing on 11 is 12.5% while the experimental probability of landing on 11 is 30%

• The experimental probability of landing on 11 is less than the theoretical probability of landing on 11

• The theoretical probability of landing on 11 is equal to the experimental probability of landing on 11

Joe is spinning a spinner with four equal sections labeled red, blue, green and yellow. If he wants the experimental probability of spinning green to be similar to the theoretical probability of spinning green, what must happen?

• He should spin the spinner a large number of trials

• He should make more outcomes.

• He only needs to spin the spinner a small number of trials

• He should take away some of the outcomes

Lisa is rolling a six-sided number cube. If she wants the experimental probabilities to be as close as possible to the theoretical probabilities, how many times should she roll the number cube?

• 100 times

• 10,000 times

• 10,000,000 times

• 100,000 times