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Probability

Authored by viczz Gengania

Mathematics

10th - 12th Grade

CCSS covered

Used 7+ times

Probability
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27 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

In an AP Statistics class, 57% of students eat breakfast in the morning, 80% of them floss their teeth, and 46% of the students do both.  What is the probability that a randomly chosen student eats breakfast but does not floss their teeth?

9%
11%
34%
91%

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

In an AP Statistics class, 57% of students eat breakfast in the morning, 80% of them floss their teeth, and 46% of the students do both.  What is the probability that a randomly chosen student eats breakfast or flosses their teeth?

91%
9%
11%
34%

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A fair coin has come up "heads" 10 times in a row.  The probability that the coin will come up heads on the next flip is:

greater than 50%, it's due to happen.
50%
less than 50%, since tails is happening so much.
Can't be determined

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

According to the National Telecommunication and Information Administration, 50.5% of U.S. households had internet access in 2001.  What is the probability that four randomly selected U.S. all had internet access in 2001?

6.5%
12.6%
49.5%
50.5%

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

100 people were surveyed.  54 were female, and 46 were male.  33 of the females said they were democrats, and 30 of the males said they were republicans.  If a person is randomly selected, what is the probability that its a democrat?

49%
46%
54%
51%

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

100 people were surveyed.  54 were female, and 46 were male.  33 of the females said they were democrats, and 30 of the males said they were republicans.  If a person is randomly selected, what is the probability that its a democrat  GIVEN THAT it is a female?

.67
.49
.61
.33

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

100 people were surveyed.  54 were female, and 46 were male.  33 of the females said they were democrats, and 30 of the males said they were republicans.  If two people are randomly selected, what is the probability they are both males?

.30
.46
.25
.21

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