3 A random sample of 25 is drawn from a population with unkn

3. A random sample of 25 is drawn from a population with unknown mean and
std. dev. The sample mean was 46 and std. dev 10. Find:
a) 95% confidence limits for the population mean.
b) 90% Confidence limits for the [opulation mean.

3. A random sample of 25 is drawn from a population with unknown mean and
std. dev. The sample mean was 46 and std. dev 10. Find:
a) 95% confidence limits for the population mean.
b) 90% Confidence limits for the [opulation mean.

Solution

For 95%

Confidence Interval:95%