Maurice Tutor

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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 11 Oct 2017 My Price 7.00

GPAs and starting salaries

Refer to Exercise 13.85. Construct a 98% confidence interval for the mean starting salary of recent college graduates with a GPA of 3.15. Construct a 98% prediction interval for the starting salary of a randomly selected recent college graduate with a GPA of 3.15.

Exercise 13.85:

The following table gives information on GPAs and starting salaries (rounded to the nearest thousand dollars) of seven recent college graduates.

a. With GPA as an independent variable and starting salary as a dependent variable, compute SSxx,

SSyy, and SSxy.

b. Find the least squares regression line.

c. Interpret the meaning of the values of a and b calculated in part b.

d. Calculate r and r2 and briefly explain what they mean.

e. Compute the standard deviation of errors.

f. Construct a 95% confidence interval for B.

g. Test at the 1% significance level whether B is different from zero.

h. Test at the 1% significance level whether ρ is positive.

Answers

Maurice Tutor
(5)
Status NEW Posted 11 Oct 2017 04:10 PM My Price 7.00

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