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

Theoretical Probability is?

• What Should happen
• What does happen
• What Will Happen
• What I want to Happen

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

TEKS.MATH.7.6D

The shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days.

About what percent of the products last between 12 and 15 days?

• 68%
• 34%
• 16%
• 2.5%

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

TEKS.MATH.7.6D

There are seven boys and seven girls in a class. The teacher randomly selects one student to answer a question. Later, the teacher randomly selects a different student to answer another question. What is the probability that the first student is a boy and the second student is a girl?

• 7/26
• 1/2
• 2/17
• 8/29

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

Lucy has the spinner pictured and spins it twice in a row. What is the probability that she lands on blue first and then on yellow or green?

• 1 / 16
• 1 ⁄ 6
• 1 ⁄ 8
• 3 ⁄ 4

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

What percent of people who play an instrument do not play a team sport?

• 80%
• 27.2%
• 40%
• 90.1%

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

The scoring of modern IQ is such that Intelligence Quotients (IQs) have a normal distribution of μ= 100 and 𝞂 = 15.

Mensa International is a non-profit organization that accepts only people with IQ score within the top 2%. What level of IQ qualifies one to be a member of Mensa?

• 115
• 130.75
• 145
• 120

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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

Brad has a bag containing 8 green cubes, 6 red cubes, and 14 yellow cubes. All of the cubes are the same size. What is the probability of randomly selecting 1 yellow cube and then 1 green cube from the bag, without replacing the first cube?

• $\frac{1}{112}$

• $\frac{4}{27}$

• $\frac{13}{54}$

• $\frac{2}{5}$

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

What is the complement of flipping a coin 20 times and landing on heads 11 times?

• P' = 1/10

• P' = 11/20

• P' = 9/20

• P' = 10/20

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

A random survey of 131 high school students was conducted on April 25. The results are shown in the table. Let A = being male and B = have completed ALL DLD assignments for 5 weeks. Are the events independent? Explain.

• P(A) = 0.42, P(B) = 0.62, P(A and B) = 0.26

  P(A) x P(B) = 0.26 Since P(A) x P(B) = P(A and B), the events are independent.

• P(A) = 0.42, P(B) = 0.62, P(A and B) = 0.26

  P(A) x P(B) = 0.26 Since P(A) x P(B) = P(A and B), the events are not independent.

• This cannot be determined since the number of males surveyed is not equal to the number of females surveyed.

• P(A) = 0.42, P(B) = 0.62, P(A and B) = 0.26 and P(A or B) = 0.78 so the events are independent.

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