In a study, nine tires of a particular brand were driven on a track under identi

Question

In a study, nine tires of a particular brand were driven on a track under identical conditions. Each tire was driven a particular controlled distance (measured in thousands of miles) and the tread depth was measured after the drive. Tread depth is measured in “mils.” Here, 1 mil is 0.001 inch. The least-squares regression line was computed and added to a scatterplot of these data. On the plot, one data point is marked with an “X.” The equation of the least-squares regression line is: Tread depth = 360.64 – 11.39x (thousands of miles) Also, r2 = 0.953. We might feel comfortable using the least-squares regression equation to predict tread depth for a tire driven: roughly between 0 and 50 thousand miles. roughly between 0 and 30 thousand miles. more than 50 thousand miles. cannot be determined from the information provided.

Explanation / Answer

here as tread depth can not be negative and above 360.64/11.39 =31.66 thousands of miles it will turn out to be negative.

hence roughly between 0 and 30 thousand miles

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.