Create a 95 confidence interval for the slope of the

Assignment Help Basic Statistics

Reference no: EM13637767

The following is the results of a regression analysis of vehicle fuel efficiency (MPG) and vehicle weight (in thousands of pounds)

Vehicle	Count	Mean	StdDev
MPG	50	25.0200	4.83394
wt/1000	50	2.88780	0.511656

Dependent variable is: MPG

R-squared = 75.6%

s = 2.413 with 50-2 = 48 df

Variable	Coefficient	SE(Coeff)	t-ratio	p-value
Intercept	48.7393	1.976	24.7	less than or equal to 0.0001
Weight	-8.21362	0.6738	-12.2	less than or equal to 0.0001

a) Create a 95% confidence interval for the slope of the regression line and explain what the interval means

b) Create a 95% confidence interval for the average fuel efficiency among cars weighing 2,500 pounds and explain what the interval means

Reference no: EM13637767

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