You passed this Milestone
22 questions were answered correctly.
5 questions were answered incorrectly.
1
Which of the following is a property of binomial distributions?
The sum of the probabilities of successes an
...
You passed this Milestone
22 questions were answered correctly.
5 questions were answered incorrectly.
1
Which of the following is a property of binomial distributions?
The sum of the probabilities of successes and failures is always 1.
All trials are dependent.
The expected value is equal to the number of successes in the experiment.
There are exactly three possible outcomes for each trial.
RATIONALE
Recall that for any probability distribution, the sum of all the probabilities must sum to 1.
CONCEPT
Binomial Distribution
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2
Zhi and her friends moved on to the card tables at the casino. Zhi wanted to figure out the probability of drawing
a face card or an Ace.
Choose the correct probability of drawing a face card or an Ace. Answer choices are in the form of a
percentage, rounded to the nearest whole number.
8%
4%
31%
25%
RATIONALE
Since the two events, drawing a face card and drawing an ace card, are non-overlapping, we can use the
following formula:
CONCEPT
"Either/Or" Probability for Non-Overlapping Events
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3
John is playing a game with a standard deck of playing cards. He wants to draw a jack on the first try.
Which of the following statements is true?
The probability that John draws a jack on the first try is 1/13. If John replaces the card, re-shuffles, and
draws again, the probability that he will pull another jack increases.
The probability that John draws a jack on the first try is 1/13. If John replaces the card, re-shuffles, and
draws again, the probability that he will pull another jack stays the same.
The probability that John draws a jack on the first try is 3/13. If John replaces the card, re-shuffles, and
draws again, the probability that he will pull another jack stays the same.
The probability that John draws a jack on the first try is 1/13. If John replaces the card, re-shuffles, and
draws again, the probability that he will pull another jack decreases.
RATIONALE
Events are said to be independent if one event does not influence the
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