Compute the least squares regression line for given data

Reference no: EM131814296

Question: For the data in Exercise "The Linear Correlation Coefficient"

a. Compute the least squares regression line.

b. The 28-day strength of concrete used on a certain job must be at least 3,200 psi. If the 3-day strength is 1,300 psi, would we anticipate that the concrete will be sufficiently strong on the 28th day? Explain fully.

Exercise: Construction standards specify the strength of concrete 28 days after it is poured. For 30 samples of various types of concrete the strength x after 3 days and the strength y after 28 days (both in hundreds of pounds per square inch) were measured. The sample data are summarized by the following information.

Compute the linear correlation coefficient for these sample data and interpret its meaning in the context of the problem.

Reference no: EM131814296

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