Math Solutions

[See Solution] A researcher is interested in the relation between the number of job changes and annual salaries (in thousands of dollars) for people living

Question: A researcher is interested in the relation between the number of job changes and annual salaries ( in thousands of dollars) for people living in the Southwestern parts of the country. A random sample of people employed in from this area provided the following information. X denotes the number of job changes and Y denotes the salary in thousands.

X Y
1 33
7 37
5 34
6 32
1 32
5 38
9 43
10 37
10 40
3 33

Use TI-Calculator to answer:

  1. Find the correlation coefficient and the coefficient of determination. Interpret both measures in terms of the problem. Is r significant?
  2. Find the mean of x, the mean of y and the equation of the line of regression with its range of validity.
  3. Interpret what the line of regression would be used for.
  4. Predict the salary for a person who had 4 job changes.
  5. State the see. and its meaning for the regression line in terms of this problem.
    e) Predict the salary of an employee with 8 job changes with 95 % accuracy.
    Price: $2.99
    Solution: The downloadable solution consists of 6 pages
    Deliverable: Word Document


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