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A 95% confidence interval for the mean of a population is computed to be 6 to...

A 95% confidence interval for the mean of a population is computed to be 6 to 14. Which one of the following claims would the interval tend to support?

A. The population mean is more than 7

B. The population mean is less than 15.

C. The population mean is exactly 9.

D. The population mean is between 8 and 10.

E. The population mean is more than 17.

(b) A 90% confidence interval for the mean of a population is computed to be 135 to 160. Which one of the following claims would the interval tend to refute?

A. The population mean is more than 140.

B. The population mean is more than 110.

C. The population mean is between 140 and 150.

D. The population mean is less than than 125.

E. The population mean is less than 150.

Math   Statistics-And-Probability   
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