Promotion and Age: Listed below are ages of applicants who were successful in winning promotion from a simple random sample from company A.

Ages of Successful Applicants: the population standard deviation of this group is 5.=5

33	36	37	38	38	39	42	42	43	43
44	44	44	45	45	45	45	46	46	47
47	48	48	49	49	51	51	52	54

What is the estimate for the mean? Round to two decimal places.

= 44.52

Does it meet the simple requirements to do a confidence interval? Why or Why not?

View keyboard shortcuts

Give a 95% confidence interval of the mean for the successful applicants. Show the relevant critical value, point estimate, and standard deviation (of the original population). Round all decimal values to two decimal places.

point estimate =

standard deviation =

critical value =

Confidence interval: ( , )