Answered: A sociologist is interested in the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Question

100%

A sociologist is interested in the relation between x = number of job changes and y = annual salary (in thousands of dollars) for people living in the Nashville area. A random sample of 10 people employed in Nashville provided the following information.

x _{(number of job changes)}	5	3	4	6	1	5	9	10	10	3
y _{(Salary in $1000)}	36	35	38	32	32	38	43	37	40	33

In this setting we have Σx = 56, Σy = 364, Σx² = 402, Σy² = 13,364, and Σxy = 2107.

(e) If someone had x = 3 job changes, what does the least-squares line predict for y, the annual salary? (Round your answer to two decimal places.)
thousand dollars

(f) Find S_e. (Round your answer to three decimal places.)
S_e =

(g) Find a 90% confidence interval for the annual salary of an individual with x = 3 job changes. (Round your answers to two decimal places.)

lower limit	thousand dollars
upper limit	thousand dollars

(h) Test the claim that the slope ? of the population least-squares line is positive at the 5% level of significance. (Round your test statistic to three decimal places.)

t =

Expert Solution