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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
18.30Â Â Â Â Â Â ![]()
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During 2011 a company implemented a number of policies aimed at reducing the ages of its customers’ accounts. In order to assess the effectiveness of these measures, the company randomly selects 10 customer accounts. The average age of each account is determined for each of the years 2010 and 2011. These data are given in Table 18.17. Use a nonparametric technique to attempt to show that average account ages have decreased from 2010 to 2011.
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Use a = .05.
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DS AcctAge
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18.31Â Â Â Â Â Â
The following data concern the divorce rate ( y) per 1,000 women and the percentage of the
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female population in the labor force (x):
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DS Divorce
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|
Year |
1890 |
1900 |
1910 |
1920 |
1930 |
1940 |
1950 |
1960 |
1970 |
|
Divorce Rate, y |
3.0 |
4.1 |
4.7 |
8.0 |
7.5 |
8.8 |
10.3 |
9.2 |
14.9 |
|
% of Females in |
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 |
 |
 |
 |
 |
 |
 |
 |
|
Labor Force, x* |
18.9 |
20.6 |
25.4 |
23.7 |
24.8 |
27.4 |
31.4 |
34.8 |
42.6 |
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Use a nonparametric technique to attempt to show that x and y are positively correlated. Use
a = .05.
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