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1. The random sample of five observations in exercise 1-1 found ? = 11.2 and s2 = 9.2. State your assumptions and construct a 90% confidence interval for the population mean µ.

2. The random sample of six observations in exercise 1-3 found ? = 1.5 and s2 = 6.7. State your assumptions and construct a 95% confidence interval for the population mean µ.

3. A random sample of 100 voters found that 48 of them favored candidate A. Construct a 90% confidence interval for the population proportion p that favor A.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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