Quiz about Discrete Random Variables Expected Value

Question 1

Find the value of k

Accepted Answer

1/15

Answer

1/5

Answer

1/10

Answer

1/14

Question 2

Find P(X = 2)

Accepted Answer

1/12

Answer

5/36

Answer

1/36

Answer

1/9

Question 3

Find P(X = 3)

Accepted Answer

5/36

Answer

1/12

Answer

7/36

Answer

1/6

Question 4

Find the expected value.

Accepted Answer

¹⁶¹/₃₆

Answer

¹⁶⁵/₄

Answer

⁵¹/₁₈

Answer

111/9

Question 5

Find the value of q

Accepted Answer

0.15

Answer

0.85

Answer

0.25

Answer

0.05

Question 6

Find P(X < 5)

Accepted Answer

0.5

Answer

0.2

Answer

0.3

Answer

0.7

Question 7

Find the value of k

Accepted Answer

1/10

Answer

1/6

Answer

1/12

Answer

1/8

Question 8

Find the value of p

Accepted Answer

0.1

Answer

0.9

Answer

0.3

Answer

0.15

Question 9

Find the value of c

Accepted Answer

0.2

Answer

0.8

Answer

0.3

Answer

0.1

Question 10

The sum of the product of each value of a discrete random variable X times its probability is referred to as its

Accepted Answer

expected value

Answer

variance

Answer

standard deviation

Answer

mode

Question 11

Mode of random variable is

Accepted Answer

a value of x for which f(x) takes a maximum value

Answer

Highest probability

Answer

the value in the set that occurs most often

Discrete Random Variables Expected Value

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