TEKS.MATH.9-12.V.B.1

Lilah flips a coin. What is the chance the coin comes up with the first tails in fewer than 5 flips?

• geometcdf(1/2, 5)
• geometpdf(1/2, 5)
• geometcdf(1/2, 4)
• geometpdf(1/2, 4)

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TEKS.MATH.9-12.V.B.1

There are six nickels and seven dimes in your pocket. You randomly pick a coin out of your pocket and then return it to your pocket. Then you randomly pick another coin.  What is the probability that the coin is a nickle both times?

• 36/169
• 6/13
• 5/16
• 3/19

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TEKS.MATH.9-12.V.B.1

The mean GPA of students in a course at UCDavis is 3.2 with a standard deviation of 0.3. What percent of students in the course have a GPA between 2.9 and 3.8? 

• 81.85%
• 47.5%
• 68%
• 95%

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TEKS.MATH.9-12.V.B.1

TEKS.MATH.9-12.IV.D.1

What is P(A and B) if P(A) = 1/2 and P(B) = 2/7, where A and B are independent events?

• 1/7
• 1/12
• 5/8
• 1/2

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TEKS.MATH.9-12.V.B.1

What percent of a normal distribution lies outside of ±3 standard deviations?

• 99.7%

• .15%

• .3%

• 100%

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TEKS.MATH.9-12.V.B.1

Find the probability of drawing a 10 from a standard deck of 52 cards.

• 1 out of 52
• 13 out of 52
• 26 out of 52
• 4 out of 52

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TEKS.MATH.9-12.V.B.1

Find the missing value for P(X=5) in the probability ditribution:

Number of Toys | Probability

0| 0.03

1| 0.16

2| 0.30

3| 0.23

4| 0.17

5| ?

• 0.11

• 0.21

• 0.01

• 0.31

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TEKS.MATH.9-12.V.B.1

You give the answer to a probability problem as 6/5. The teacher marks it wrong. Why?

• It should have been 5/6.

• Its not written as a percent.

• Its more than 1.

• Its not written as a decimal.

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TEKS.MATH.9-12.V.B.1

Out of those surveyed, what is the probability that the student is a boy who can't bike to school (in simplest form)?

• 4/30

• 7/30

• 2/15

• 14/30

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TEKS.MATH.9-12.V.B.1

What is the probability that a student is a female or left-handed?

• 53/121

• 58/121

• 7/53

• 12/121

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TEKS.MATH.9-12.V.B.1