15.9 For a sample of 8 employees, a personnel director has collected the following data on...

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15.9 For a sample of 8 employees, a personneldirector has collected the following data on ownership of companystock versus years with the firm.

x = 5 Years

  6  12  14  6  9  13  15  9

y = 5 Shares

  300  408  560  252  288  650  630  522

Determine the least-squares regression line and interpret itsslope.
For an employee who has been with the firm 10 years, what is thepredicted number of shares of stock owned?

For the data in Exercise 15.9, find thestandard error of estimate, then construct the 95% predictioninterval for the amount of stock owned by an individual employeewho has been with the firm for 5 years.

Please construct the

1. The 95% confidence interval for x=10 for theaverage number of shares own for all the employeeshave 10 years of service with firm. 4 points

2. The 95% prediction interval for one employee who has 10 yearsservice with the firm.4 points

Answer & Explanation Solved by verified expert

4.1 Ratings (823 Votes)

Predicted number of shares of stock owned 431872 1 95 Confidence Interval lower upper 351817 511927 2 95 Prediction Interval lower upper See Answer

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