Math 1342 Sample Test 3
Question 1
25 points
A random sample of data was obtained
47
8
68
29
95
90
7
54
3
15
33
49
21
64
4
52
4
44
6
8
79
78
57
80
109
9
48
40
80
16
50
a. Use StatCrunch to generate Summary Statistics
b. Use StatCrunch to create a Box Plot
c. Based on your summary statistics, IQR and Box Plot does the Data Contain Outliers?
d. Use StatCrunch to generate a 90% confidence interval for the mean
e. Use StatCrunch and Hypothesis Testing (P-Value Method) for the claim that the mean is different
from 40 at a 94% confidence level.
Question 2
25 points
A random sample of data was obtained
61
12
6
40
27
38
93
5
13
40
a. Use StatCrunch to generate Summary Statistics
b. Use StatCrunch to generate a Stem and Leaf Plot
c. Use StatCrunch to generate a 95% confidence interval for the mean
d. Use StatCrunch to generate a 97% confidence interval for the variance
e. Use StatCrunch and Hypothesis Testing (P-Value Method) for the claim that the mean is less than 30
at a 96% confidence level.
Question 3
25 points
A random sample of data was obtained
10.8
9.8
9.8
9.4
8.8
9.8
9.6
9.9
10.0
8.4
9.6
10.0
9.4
a. Use StatCrunch to generate Summary Statistics
b. Based on your summary statistics, IQR does the Data Contain Outliers?
c. Use StatCrunch to generate a 92% confidence interval for the mean
d. Use StatCrunch to generate a 98% confidence interval for the mean
e. Use StatCrunch and Hypothesis Testing (P-Value Method) for the claim that the mean is less than 10
at a 99% confidence level.
Question 4
25 points
A survey was done concerning – Do you favor saving the Astrodome? 1 = Yes, 0 = No and the results
were as follows
1
1
1
0
1
0
0
1
1
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
1
0
1
1
0
0
0
0
1
0
1
a. Use StatCrunch to the 93% confidence interval for the proportion of people that FAVOR saving the
Astrodome.
b. Use StatCrunch to the 97% confidence interval for the proportion of people that DO NOT FAVOR
saving the Astrodome.
c. Use StatCrunch and Hypothesis Testing (P-Value Method) for the claim that the proportion of people
that favor saving the Astrodome is greater than 50% at 90% confidence level.
d. Use StatCrunch and Hypothesis Testing (P-Value Method) for the claim that the proportion of people
that favor saving the Astrodome is different from 50% at 90% confidence level.