AnswersHCISD-Mathematical Models with Applications B-CR SUMMERTheoretical Probability

Theoretical Probability Answers

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Which statements about experimental probability are true?

A
Experimental probability is written as a ratio.
B
Experimental probability includes the number of possible outcomes.
C
Experimental probability is found by conducting trials of an experiment.
D
Experimental probability includes the number of times an event occurs in the numerator, and the total number of trials in the denominator.
E
Experimental probability includes the number of times an event occurs in the denominator, and the total number of trials in the numerator.
2
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Flip a coin 4 more times to increase the total number of trials to 8. What is the experimental probability of the coin landing heads up?

A
1/2
B
2/1
C
3/8
D
5/8
E
5/3
3

Flip a coin 4 times and calculate the experimental probability of the coin landing heads up.

A
1/4
B
1/2
C
3/4
D
4/3
E
3/1
4

What is Mason’s error?

A
Mason compared the number of free throws missed to the total number of free throws attempted.
B
Mason compared the number of free throws made to the total number of free throws attempted.
C
Mason compared the number of free throws made to the number of free throws missed.
D
Mason compared the number of free throws attempted to the difference between the number made and the number missed.
5

Perform the experiment by spinning the spinner 7 times. Which color has the highest frequency, and what was that color’s experimental probability?

A
purple; 3
B
green; 2/7
C
purple; 3/7
D
green; 2
6

Davis predicts that if he spins the spinner another 20 times, the frequency for the red and green segments will still be equal. Is Davis correct?

A
Yes. Another experiment will give the same numbers as the first experiment.
B
Yes. The experimental probabilities remain the same for all experiments.
C
No. The frequencies will be multiplied by 20.
D
No. The frequencies and probabilities for red and green segments might change in the next experiment.
7

What can you predict regarding the probability of the coin landing heads up?

A
The frequency does not change with more trials.
B
The experimental probability increases with more trials.
C
With more trials, the frequency of heads up will equal the frequency of tails up.
D
The frequency of heads up decreases with more trials.

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