Question

The data supervisor of a firm wishes to estimate the mean # of key punch errors per page of entry. A random sample of 100 pages yields mean of 1.3 and s=0.9. Construct a one sided confidence interval for µ using a lower 90% confidence limit. Interpret your result.​

Answer 1

Step-by-step explanation:

A 95% confidence interval is a range of values that you can be 95% certain contains the true mean of the population. ... With large samples, you know that mean with much more precision than you do with a small sample, so the confidence interval is quite narrow when computed from a large sample.