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Probability Distributions and Expected Value

Authored by Barbara White

Mathematics

9th - 12th Grade

Probability Distributions and Expected Value
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15 questions

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1.

MATH RESPONSE QUESTION

2 mins • 1 pt

If two coins are tossed, which is not a possible value of the random variable for the number of heads?

Mathematical Equivalence

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2.

MATH RESPONSE QUESTION

2 mins • 1 pt

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| ?

Mathematical Equivalence

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3.

MATH RESPONSE QUESTION

2 mins • 1 pt

Media Image

Given the probability distribution table below, find the value of k.

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4.

MATH RESPONSE QUESTION

2 mins • 1 pt

Media Image

What is P( X > 2).

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5.

MATH RESPONSE QUESTION

2 mins • 1 pt

Media Image

What is P( X <2).

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6.

MATH RESPONSE QUESTION

2 mins • 1 pt

Media Image

Find P( X = 4).

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7.

MATH RESPONSE QUESTION

2 mins • 1 pt

A marketing survey compiled data on the number of cars in households.  If X = the number of cars in a randomly selected household, and we omit the rare cases of more than 5 cars, then X has the following probability distribution: 

X           0          1          2          3           4           5  

P(X)   0.24    0.37    0.20    0.11    0.05     0.03

What is the probability that a randomly chosen household has at least two cars?

Mathematical Equivalence

ON

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