Mathematics Homework Help

4.) Use the confidence level and sample data to find the margin of error E.

College students’ annual earnings:

99% confidence, n = 74,   = $3967, s = $874 

5.)Construct the confidence interval for question 4 above.

6.)Write a statement that correctly interprets the confidence interval found in question 5. 

7.)Find the critical value  corresponding to a sample size of 19 and a confidence level of 99%.

8.) Find the critical value  corresponding to a sample size of 19 and a confidence level of 99%.