Table 5.5 reports that the 95% confidence interval for the comparison of mean corn size at 12

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Table 5.5 reports that the 95% confidence interval for the comparison of mean corn size at 12 months between the corn plaster and scalpel groups is: −1.7 to −0.2 mm.

Which (if any) of the following statements is CORRECT?

A. The above 95% confidence interval definitely contains the true population mean difference in corn size at 12 months between the corn plaster and scalpel groups.

B. The 95% confidence interval is calculated as ±3 standard errors away from the mean difference.

C. There is a probability of 0.95 that the population mean difference in corn size at 12 months between the corn plaster and scalpel groups lies between −1.7 and −0.2 mm.

D. The 95% confidence interval does not contain the true population mean difference in corn size at 12 months between the corn plaster and scalpel groups.

E. The above 95% confidence interval is likely to contain the true population mean difference in corn size at 12 months between the corn plaster and scalpel groups.

Table 5.5

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Medical Statistics A Textbook For The Health Sciences

ISBN: 9781119423645

5th Edition

Authors: Stephen J. Walters, Michael J. Campbell, David Machin

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