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Posted on Wednesday, January 26th, 2011 at 11:28 amWill someone please solve these problems for me please. Your help will be greatly appreciated Thanks you!!?
11) The mean number of travel days per year for the outside salespeople employed by hardware distributors is to be estimated. The 0.90 degree of confidence is to be used. The mean of a small pilot study was 150 days, with a standard deviation of 14 days. If the population mean is to be estimated within two days, how many outside salespeople should be sampled?
A. 134
B. 452
C. 511
D. 2100
12) The proportion of junior executives leaving large manufacturing companies within three years is to be estimated within 3 percent. The 0.95 degree of confidence is to be used. A study conducted several years ago revealed that the percent of junior executives leaving within three years was 21. To update this study, the files of how many junior executives should be studied?
A. 594
B. 612
C. 709
D. 897
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