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Statistics / Probability and Statistical Inference 9 / Chapter 7.4 / Problem 7.4-11

Probability and Statistical Inference | 9th Edition | ISBN: 9780321923271 | Authors: Robert V. Hogg, Elliot Tanis, Dale Zimmerman

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Some dentists were interested in studying the fusion of embryonic rat palates by a

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QUESTION:

Some dentists were interested in studying the fusion of embryonic rat palates by a standard transplantation technique. When no treatment is used, the probability of fusion equals approximately 0.89. The dentists would like to estimate p, the probability of fusion, when vitamin A is lacking. (a) How large a sample n of rat embryos is needed for y/n 0.10 to be a 95% confidence interval for p?(b) If y = 44 out of n = 60 palates showed fusion, give a 95% confidence interval for p.

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QUESTION:

Some dentists were interested in studying the fusion of embryonic rat palates by a standard transplantation technique. When no treatment is used, the probability of fusion equals approximately 0.89. The dentists would like to estimate p, the probability of fusion, when vitamin A is lacking. (a) How large a sample n of rat embryos is needed for y/n 0.10 to be a 95% confidence interval for p?(b) If y = 44 out of n = 60 palates showed fusion, give a 95% confidence interval for p.

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