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Experimental vs. Theoretical Probability Answers

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Mai conducted an experiment by flipping a fair coin 200 times. The coin landed heads up 110 times. Which statement about the coin landing heads up in Mai’s experiment is correct?

A
The experimental probability of the coin landing heads up is and the theoretical probability of the coin landing heads up is .
Option A
B
The experimental probability of the coin landing heads up is and the theoretical probability of the coin landing heads up is .
Option B
C
The experimental probability of the coin landing heads up is and the theoretical probability of the coin landing heads up is .
Option C
D
The experimental probability of the coin landing heads up is and the theoretical probability of the coin landing heads up is .
Option D
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Four students are determining the probability of flipping a coin and it landing head's up. Each flips a coin the number of times shown in the table below.StudentNumber of FlipsAna50Brady10Collin80Deshawn20Which student is most likely to find that the actual number of times his or her coin lands heads up most closely matches the predicted number of heads-up landings?

A
Ana
B
Brady
C
Collin
D
Deshawn
3

Elijah is going to spin a spinner 180 times. He predicts that 60 of those spins will result in the spinner landing on the section labeled 3. Based on the theoretical probability, which best describes Elijah’s prediction?

Question illustration
A
Elijah’s prediction is exact because .
Option A
B
Elijah’s prediction is exact because .
Option B
C
Elijah’s prediction is high because .
Option C
D
Elijah’s prediction is low because .
Option D
4

Josh used a standard deck of 52 cards to conduct an experiment. Half of the cards in the deck were red. The other half were black. Josh predicted that he would choose a red card in 4 out of 8 trials. When he conducted the experiment, he actually chose a red card 6 out of 8 times. Which explains the most likely reason for the discrepancy between Josh’s predicted and actual results?

A
He incorrectly predicted the number of times he would choose a red card.
B
He incorrectly determined the actual number of times he chose a red card.
C
He used too few trials for the sample space.
D
He used too many trials for the sample space.
5

Luis rolled a number cube 60 times. He rolled the number 6 four times. Which is most likely the cause of the discrepancy between Luis’s experimental outcome and the predicted outcome?

A
He did not perform enough trials.
B
He performed too many trials.
C
He needs to add the number 6 to the number of times it occurred.
D
He needs to subtract the experimental outcome from the predicted outcome.
6

A set of face cards contains 4 Jacks, 4 Queens, and 4 Kings. Carlie chooses a card from the set, records the type of card, and then replaces the card. She repeats this procedure a total of 60 times. Her results are shown in the table.CardsType of CardObserved FrequencyRelative FrequencyJack24Queen16King20How does the experimental probability of choosing a Queen compare with the theoretical probability of choosing a Queen?

Question illustration
A
The experimental probability is 4 less than the theoretical probability.
B
The experimental probability is less than the theoretical probability.
Option B
C
The experimental probability is more than the theoretical probability.
Option C
D
The experimental probability is 4 more than the theoretical probability.
7

Alberto conducted an experiment by rolling a fair six-sided number cube 60 times. He rolled a 2 fifteen times. Which statement about rolling a 2 in Alberto’s experiment is correct?

A
The experimental probability of rolling a 2 is and the theoretical probability of rolling a 2 is .
Option A
B
The experimental probability of rolling a 2 is and the theoretical probability of rolling a 2 is .
Option B
C
The experimental probability of rolling a 2 is and the theoretical probability of rolling a 2 is .
Option C
D
The experimental probability of rolling a 2 is and the theoretical probability of rolling a 2 is .
Option D
8

Nadine conducted an experiment with four possible outcomes. Trevor conducted the same experiment, but he doubled the number of trials. Which statements are true? Select two options.

A
Trevor has more experimental outcomes than Nadine.
B
Trevor’s sample space is greater than Nadine’s.
C
Trevor’s experimental probability is more likely closer to the theoretical probability than Nadine’s.
D
Nadine’s experimental probability is more likely closer to the theoretical probability than Trevor’s.
E
Nadine has more experimental outcomes than Trevor.
9

Frederick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin. He spun a 4 five times. Which statements are true? Choose all that apply.

Question illustration
A
For the experimental outcomes to be closer to the predicted outcome, the number of trials should be increased.
B
For the experimental outcomes to be closer to the predicted outcome, the number of trials should be decreased.
C
If the number of trials is changed, the experimental probability also changes.
D
If the number of trials is changed, the theoretical probability also changes.
E
If the number of trials is changed, the number of experimental outcomes also changes.
10

A set of cards contains cards numbered 1 – 8. Mrs. Jacob’s class is conducting an experiment in which a card is drawn from the pile, the number is recorded, and then the card is returned to the set. The class will conduct 1,000 trials. Based on the theoretical probability, which is the best prediction for the number of times a 4 will be drawn from the pile?

A
111
B
125
C
143
D
250

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