The office of records at a university has stated that the proportion of incoming female students who major in business has increased. A sample of female students taken several years ago is compared with a sample of female students this year. Results are summarized below. Has the proportion increased significantly? Test at ? = .10.
?
Sample Size
No. of Females Majoring in Business
Previous Sample250
50
Present Sample300
69
What will be an ideal response?
?
| H0: ppres - pprev? 0 | |
| Ha: ppres - pprev> 0 | |
| z = .85; p-value = .1977; do not reject H0; there is no sufficient evidence to conclude that the proportion has increased significantly. | |
Business
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