For Exercises 7–9, do the following, for the indicated data:
7. Data in Exercise 1, for 10 years of education
13.99.7
(a) 20.92 thousand dollars (b) (14.28, 27.56). We are 95% confident that the mean annual salary for people with 10 years of education lies between 14.28 thousand dollars and 27.56 thousand dollars. (c) (6.55, 35.29). We are 95% confident that the annual salary for a randomly selected person with 10 years of education lies between 6.55 thousand dollars and 35.29 thousand dollars.