Use the regression output to solve the following question:

Calculate a 99% confidence interval for the average GPA of male candidates with a score of 110 on the IQ test and 60 on the SE test. (Hint: ( ) = 0.198) (CALCULATE MANUALLY)

The solution to this problem is found by calculating , the beta values are given in the regression test results. (Hint)

= b0 + b1 * IQ + b2 * SE

Multiple linear regression results: Dependent Variable: gpa Independent Variable(s): iq, se, sex gpa = -3.6565961 + 0.08078878 iq + 0.050483144 se + -0.82220295 sex Parameter estimates:

Parameter	Estimate	Std. Err.	Alternative	DF	T-Stat	P-value
Intercept	-3.6565961	1.2630959	0	73	-2.8949472	0.005
iq	0.08078878	0.013364211	0	73	6.0451588	<0.0001
se	0.050483144	0.013961878	0	73	3.6157846	0.0005
sex	-0.82220295	0.31354697	0	73	-2.6222641	0.0106

Analysis of variance table for multiple regression model:

Source	DF	SS	MS	F-stat	P-value
Model	3	163.23368	54.411226	31.095712	<0.0001
Error	73	127.73528	1.7497984
Total	76	290.96896

Summary of fit: Root MSE: 1.3227994 R-squared: 0.561 R-squared (adjusted): 0.543