A basketball coach claims that by taking a special vitamin

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Q1) A basketball coach claims that by taking a "special" vitamin, a weight lifter can increase his strength. Eight players are selected and given a test of strength. After two weeks of training, supplemented by the vitamin, they are tested again. Test the effectiveness of the vitamin at Alpha = .05.

Q2) Find the 90% confidence interval for the data above.

Q3) In a sample of 200 Dr's, 15% thought that the government should control health care. In a sample of 200 nurses, 21% felt the same way. At Alpha = .01, is there a difference in the proportions?

Q4) Find the 95% confidence interval for the data above.

Reference no: EM13579270

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