Use the results of Exercises 11.69 and 11.70 to determine which regression model provide...

Use the results of Exercises 11.69 and 11.70 to determine which regression model provides the better fit. Give reasons for your choice.

REFERENCE:

11.70 : Refer to the data of Exercise 11.69. A plot of y versus the (natural) logarithm of x is shown and more Stata output is given here:

a. What is the regression line using log x as the independent variable?

b. Conduct a test of and give the level of significance for a one-sided alternative,

11.69 : A government agency responsible for awarding contracts for much of its research work is under careful scrutiny by a number of private companies. One company examines the relationship between the amount of the contract (×$10,000) and the length of time between the submission of the contract proposal and contract approval:

a. What is the least-squares line?

b. Conduct a test of the null hypothesis Give the p-value for your test, assuming