AnswersEAP-Algebra Functions and Data Analysis B CRStandard Deviation

Standard Deviation Answers

26 verified answers4 views
1
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A =

Answer:

1/4

2
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B =

Answer:

1/2

3

c =

Answer:

-1

4

The expected value for the number of heads is .

A
0
B
0.5
C
1
D
1.5
E
2
5

The expected value in this case means .

A
if you flip a coin twice, heads will turn up 1 time
B
after repeated trials of flipping a coin twice, the average number of times heads will turn up is 1
C
after repeated trials of flipping a coin twice, the average number of times heads will turn up is 1/2
6

f =

Answer:

4

7

g =

Answer:

-1

8

The expected value of the number of points won on a spin is .

A
–0.25 points
B
0 points
C
0.5 points
D
1 point
E
1.25 points
9

C =

Answer:

1/4

10

a =

Answer:

4

11

Suppose you spin the carnival spinner 1,000 times. How many points would you expect to win or lose?

A
lose 500 points
B
lose 250 points
C
win 250 points
D
win 500 points
12

a = b = c =

Answer:

9

13

For what expected value is a game fair?

A
E(X) < 0
B
E(X) = 0
C
E(X) = 1
D
E(X) > 0
14

P(GG) =

Answer:

4/9

15

b =

Answer:

4

16

a = b = c =

Answer:

48

17

P(GY) =

Answer:

2/9

18

a = b = c =

Answer:

-1

19

P(YG) =

Answer:

2/9

20

P(YY) =

Answer:

1/9

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