Question 1

a. 
Not binomial: there are too many trials. 

b. 
Procedure results in a binomial distribution. 

c. 
Not binomial: there are more than two outcomes for each trial. 

d. 
Not binomial: the trials are not independent. 
10 points
Question 2

a. 
u=6.1 


b. 
u=6.9 


c. 
u=7.3 


d. 
u=6.6 

10 points
Question 3

a. 
stdev = 6.25 

b. 
stdev=0.01 

c. 
stdev=5.67 

d. 
stdev = 2.40 
10 points
Question 4
Houses sold (x) 
p(x) 
0 
0.24 
1 
0.01 
2 
0.12 
3 
0.16 
4 
0.01 
5 
0.14 
6 
0.11 
7 
0.21 

a. 
2.25 


b. 
2.62 


c. 
6.86 


d. 
4.45 

10 points
Question 5
x 
p(x) 
x 
p(x) 
x 
p(x) 
0 
0.000 
5 
0.122 
10 
0.061 
1 
0.001 
6 
0.183 
11 
0.022 
2 
0.006 
7 
0.209 
12 
0.006 
3 
0.022 
8 
0.183 
13 
0.001 
4 
0.061 
9 
0.122 
14 
0.000 

a. 
0.122 


b. 
0.022 


c. 
0.183 


d. 
0.000 

10 points
Question 6
x 
p(x) 
x 
p(x) 
x 
p(x) 
0 
0.000 
5 
0.122 
10 
0.061 
1 
0.001 
6 
0.183 
11 
0.022 
2 
0.006 
7 
0.209 
12 
0.006 
3 
0.022 
8 
0.183 
13 
0.001 
4 
0.061 
9 
0.122 
14 
0.000 

a. 
0.061 


b. 
0.212 


c. 
0.122 


d. 
0.001 

10 points
Question 7
x 
p(x) 

0 
0.287 

1 
0.225 

2 
0.027 

3 
0.339 

4 
0.080 

5 
0.096 


a. 
The distribution is a probability distribution. 

b. 
The distribution is not a probability distribution, the sum of p(x)'s is not one. 

c. 
The distribution is not a probability distribution, a p(x) is greater than one. 

d. 
The distribution is not a probability distribution, a p(x) is negative. 
10 points
Question 8

a. 
0.085 


b. 
0.036 


c. 
0.018 


d. 
0.027 

10 points
Question 9

a. 
Discrete 


b. 
Continuous 

10 points
Question 10

a. 
0.198 


b. 
0.700 


c. 
0.464 


d. 
0.132 

10 points
Question 11
x 
p(x) 

1 
0.037 

2 
0.200 

3 
0.444 

4 
0.296 


a. 
Not a probability distribution, a p(x) is greater than 1. 

b. 
The distribution is a probability distribution. 

c. 
Not a probability distribution, sum of p(x)'s is not 1. 

d. 
Not a probability distribution, a p(x) is negative. 
10 points
Question 12

a. 
Yes 


b. 
No 

10 points
Question 13
x 
p(x) 

0 
0.23 

1 
0.24 

2 
0.30 

3 
0.14 

4 
0.09 


a. 
The distribution is a probability distribution. 

b. 
The distribution is not a probability distribution, a p(x) is negative. 

c. 
The distribution is not a probability, the sum of p(x)'s is not equal to one. 

d. 
The distribution is not a probability distribution, a p(x) is greater than one. 
10 points
Question 14
Houses sold (x) 
p(x) 
0 
0.24 
1 
0.01 
2 
0.12 
3 
0.16 
4 
0.01 
5 
0.14 
6 
0.11 
7 
0.21 

a. 
3.60 


b. 
3.40 


c. 
3.35 


d. 
3.50 

10 points
Question 15

a. 
$16,100 


b. 
$25,200 


c. 
$12,200 


d. 
$10,000 

10 points
Question 16

a. 
Continuous 


b. 
Discrete 

10 points
Question 17

a. 
$5.24 


b. 
$8.43 


c. 
$1.60 


d. 
$6.83 

10 points
Question 18

a. 
Minimum: 14.92; maximum: 22.68 

b. 
Minimum: 11.04; maximum: 26.56 

c. 
Miniumum: 11.28; maximum: 48.88 

d. 
Minimum: 26.56; maximum: 11.04 
10 points
Question 19

a. 
0.22 


b. 
3.52 


c. 
2.75 


d. 
4.00 

10 points
Question 20

a. 
Not binomial: the trials are not independetn. 

b. 
Not binomial: there are more than two outcomes for each trial. 

c. 
Not binomial: there are too many trials. 

d. 
Procedure results in a binomial distribution. 
Subject  Mathematics 
Due By (Pacific Time)  06/14/2015 12:00 am 
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