Question

In: Statistics and Probability

You want to find out if the population mean of e-commerce activities is less than 7.0....

  1. You want to find out if the population mean of e-commerce activities is less than 7.0. Similar models have a standard deviation of 2.5.
    1. Calculate the sample mean and standard deviation of 100 firms’ e-commerce activities rating scores. What is the p-value? How does it compare to a = .01? Interpret results.
    2. Test at the .01 level of significance, is there evidence that the population mean e-commerce activities rating is less than 7.0? Interpret results.

ID   E-Commerce Activities/Website   Industry Type   Complaint Resolution   Competitive Pricing   Warranty & Claims   Satisfaction
1   3,9   0   5,9   6,8   4,7   8,2
2   2,7   1   7,2   5,3   5,5   5,7
3   3,4   0   5,6   4,5   6,2   8,9
4   3,3   1   3,7   8,8   7   4,8
5   3,4   0   4,6   6,8   6,1   7,1
6   2,8   1   4,1   8,5   5,1   4,7
7   3,7   1   2,6   8,9   4,8   5,7
8   3,3   0   4,8   6,9   5,4   6,3
9   3,6   1   6,7   9,3   5,9   7
10   4,5   0   6,1   8,4   5,4   5,5
11   3,2   0   4,8   6,8   5,8   7,4
12   4,9   0   3,9   8,2   5,8   6
13   5,6   1   6,9   7,6   6,5   8,4
14   3,9   1   5,5   7,1   6,7   7,6
15   4,5   0   6,9   8,8   6   8
16   3,2   0   6,8   4,9   6,1   6,6
17   4   1   6   6,2   6,7   6,4
18   4,1   0   7,2   8,4   6,2   7,4
19   3,4   1   6,4   9,1   5,4   6,8
20   4,5   0   6,4   8,4   5,8   7,6
21   3,8   0   5,2   8,4   7,1   5,4
22   5,7   1   5,9   4,5   6,4   9,9
23   3,6   0   5,1   3,7   6,7   7
24   2,4   0   7,2   6,2   6,4   8,6
25   4,1   0   4,7   8   6,5   4,8
26   3,6   0   6,1   7,1   6,1   6,6
27   3   0   5,8   4,8   6,9   6,3
28   3,3   1   5,5   9   6,5   5,4
29   3   0   6   4,8   5,8   6,3
30   3,6   1   4   7,7   4,9   5,4
31   3,4   1   4,3   5,2   7,7   6,1
32   2,5   0   4,5   6,6   6,8   6,4
33   3,7   1   5,3   9,2   5,7   5,4
34   3,3   1   5,7   8,7   5,9   7,3
35   4   0   3,9   8,4   6,2   6,3
36   3,2   0   4,3   5,6   6,1   5,4
37   3,4   0   4,6   6,8   6,4   7,1
38   4,1   0   7,3   7,7   6,1   8,7
39   3,6   1   6,2   9   5,2   7,6
40   4,9   0   4,8   8,2   5,1   6
41   3,4   1   5,5   9,1   4,1   7
42   3,8   1   5,4   8,5   4,9   7,6
43   5,1   0   6,8   7,4   5,1   8,9
44   5,1   1   6,9   5,9   7,2   7,6
45   2,5   1   7,1   5,2   5,1   5,5
46   4,1   0   5,9   8,4   6,4   7,4
47   4,3   1   6,3   3,8   6,7   7,1
48   3,8   1   7,5   8,2   6,6   7,6
49   3,7   0   6,1   6,8   5,9   8,7
50   3,9   1   5,8   4,7   5,2   8,6
51   3,6   0   4,2   7,2   5,7   5,4
52   2,7   1   7,4   5,3   5,3   5,7
53   2,5   0   6,1   6,3   6,3   8,7
54   3,4   1   4,4   5,2   6,4   6,1
55   3,3   1   5,8   8,7   5,3   7,3
56   3,8   1   5,7   7,4   6,6   7,7
57   5,1   0   7,7   9,6   6,4   9
58   3,6   1   5,8   4,4   6,7   8,2
59   4,3   1   3,7   3,8   6,7   7,1
60   2,8   1   6,9   5,4   6,2   7,9
61   3,2   0   6,1   4,9   7,2   6,6
62   3,8   0   5   6,7   5,1   8
63   3,9   0   5,1   5,8   5   6,3
64   2,2   0   4,5   6,2   6   6
65   3,6   0   4,1   7,2   6,5   5,4
66   3,8   1   6,7   8,2   5,4   7,6
67   4   1   6,4   6,2   7,5   6,4
68   3,7   1   5,4   6   5,6   6,1
69   3,5   1   3,5   7,6   5,1   5,2
70   3,6   0   5,3   7,1   5,2   6,6
71   4,5   0   5,9   8,4   7,1   7,6
72   3,2   1   3,7   5   5,2   5,8
73   4,3   0   6,6   8,7   4,7   7,9
74   3,7   0   4,7   6,8   7,2   8,6
75   3,9   0   5,5   6,8   5,7   8,2
76   3   0   5   4,9   7,3   7,1
77   3,6   0   4,6   7,4   8,1   6,4
78   3,8   1   6,2   8,5   7,3   7,6
79   3,5   0   7,6   4,6   6,6   8,9
80   3,4   1   4,1   7,8   6,1   5,7
81   3   0   4,8   4,9   5,9   7,1
82   3,2   0   4,9   6,8   6,3   7,4
83   2,9   0   3,9   6,3   6,1   6,6
84   3,2   1   3,6   8,4   7,3   5
85   2,6   0   6,6   5,9   6,5   8,2
86   3,5   1   4,5   7,6   4,9   5,2
87   3,6   0   3   8,2   4,3   5,2
88   2,6   0   6,7   5,9   6,9   8,2
89   3,6   1   5,4   8,3   6,5   7,3
90   5,5   1   7   6,3   7,4   8,2
91   3,7   1   4,1   7,3   7,5   7,4
92   4,2   1   2,6   9,9   5,5   4,8
93   3,9   1   5,3   7,1   6,2   7,6
94   3,5   0   7,8   4,6   6,4   8,9
95   3,8   1   4,6   7,4   5,3   7,7
96   4,8   1   5,3   6,7   5,8   7,3
97   3,4   0   5   7,2   4,5   6,3
98   3,2   0   3,2   5,6   5   5,4
99   4,9   1   5,3   7,9   6   6,4
100   3   1   5,1   9,7   5,7   6,4

Solutions

Expert Solution


Related Solutions

How is m-commerce different than e-commerce?
How is m-commerce different than e-commerce?
You wish to test the claim that the first population mean is less than the second...
You wish to test the claim that the first population mean is less than the second population meanat a significance level of α=0.001α=0.001.      Ho:μ1=μ2Ho:μ1=μ2 Ha:μ1<μ2Ha:μ1<μ2 You obtain the following two samples of data. Sample #1 Sample #2 43.3 56.2 64.2 49.7 95.4 61.0 85.0 49.1 50.9 49.1 61.0 63.2 72.7 81.7 41.4 55.8 54.5 83.6 93.5 79.2 74.9 77.8 49.8 48.8 43.5 90.5 90.5 76.2 47.7 What is the test statistic for this sample? test statistic =   Round to 3...
You wish to test the claim that the first population mean is less than the second...
You wish to test the claim that the first population mean is less than the second population mean at a significance level of α=0.01α=0.01.      Ho:μ1=μ2Ho:μ1=μ2 Ha:μ1<μ2Ha:μ1<μ2 You obtain the following two samples of data. Sample #1 Sample #2 71.2 85.7 85.4 76.5 92.2 81.3 72.7 71.8 86.8 78.3 86.3 78.7 80.3 72.2 93.3 83.2 86.8 85.3 81.6 80.5 87.8 88.6 75.4 What is the test statistic for this sample? test statistic = Round to 3 decimal places. What is...
You wish to test the claim that the first population mean is less than the second...
You wish to test the claim that the first population mean is less than the second population mean at a significance level of α=0.001α=0.001.      Ho:μ1=μ2Ho:μ1=μ2 Ha:μ1<μ2Ha:μ1<μ2 You obtain the following two samples of data. Sample #1 Sample #2 41.5 47.1 71.9 67.8 57.1 72.9 52.3 70.3 65.5 68.8 66.2 69.3 70.4 87.8 79.7 89.4 81.0 70.4 71.4 68.8 91.6 82.1 79.1 What is the test statistic for this sample? test statistic =  Round to 4 decimal places. What is the...
You wish to test the claim that the first population mean is less than the second...
You wish to test the claim that the first population mean is less than the second population mean at a significance level of α=0.01α=0.01.      Ho:μ1=μ2Ho:μ1=μ2 Ha:μ1<μ2Ha:μ1<μ2 You obtain the following two samples of data. Sample #1 Sample #2 71.2 85.7 85.4 76.5 92.2 81.3 72.7 71.8 86.8 78.3 86.3 78.7 80.3 72.2 93.3 83.2 86.8 85.3 81.6 80.5 87.8 88.6 75.4 What is the test statistic for this sample? test statistic = Round to 3 decimal places. What is...
You wish to test the claim that the first population mean is less than the second...
You wish to test the claim that the first population mean is less than the second population mean at a significance level of α=0.02α=0.02.      Ho:μ1=μ2Ho:μ1=μ2 Ha:μ1<μ2Ha:μ1<μ2 You obtain the following two samples of data. Sample #1 Sample #2 72.8 86.5 83.4 79.7 88.0 76.7 86.5 87.5 93.6 91.3 82.0 78.6 92.7 89.2 95.0 63.1 82.9 82.0 104.1 75.4 84.2 98.6 60.6 76.4 85.9 83.7 75.9 74.8 What is the test statistic for this sample? test statistic =  Round to 3...
You wish to test the claim that the first population mean is less than the second...
You wish to test the claim that the first population mean is less than the second population mean at a significance level of α=0.02α=0.02.      Ho:μ1=μ2Ho:μ1=μ2 Ha:μ1<μ2Ha:μ1<μ2 You obtain the following two samples of data. Sample #1 Sample #2 72.8 86.5 83.4 79.7 88.0 76.7 86.5 87.5 93.6 91.3 82.0 78.6 92.7 89.2 95.0 63.1 82.9 82.0 104.1 75.4 84.2 98.6 60.6 76.4 85.9 83.7 75.9 74.8 What is the test statistic for this sample? test statistic =  Round to 3...
what does it mean if your sample mean is greater/or less than your population mean? obviously...
what does it mean if your sample mean is greater/or less than your population mean? obviously I have to reject the null for both circumstances but is there anything I can conclude about the population?
Population Mean: Population mean of hours playing games is less than 2.5. results: 3,4,.5,2,2,2.5,5,1,3,6. 11 subjects...
Population Mean: Population mean of hours playing games is less than 2.5. results: 3,4,.5,2,2,2.5,5,1,3,6. 11 subjects tested. Test the hypothesis at 0.5 SL
sample of 67,find probability of a sample mean being less than 20.1 if the mean =...
sample of 67,find probability of a sample mean being less than 20.1 if the mean = 20 and standard deviation=1.35
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT