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# Confidence Limits

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Recall that the SAT math test has a theoretical mean of 500 and a standard deviation of 100:
Suppose a sample of 50 mathematically -gifted youngsters scored a mean of 560 on the SAT math test.
What would the 90 percent confidence limits be?
What would the 99 percent confidence limits be for the same sample?

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#### Solution Preview

Recall that the SAT math test has a theoretical mean of 500 and a standard deviation of 100:
Suppose a sample of 50 mathematically -gifted youngsters scored a mean of 560 on the SAT math test. What would the 90 percent confidence limits be? What would the 99 percent confidence limits be for the same sample?

What would the 90 percent confidence limits be

Mean= 500
Standard deviation = 100
sample size=n= 50
standard error of mean= standard ...

#### Solution Summary

The solution calculates 90% and 99% confidence limits for population mean.

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