The average LSAT scores (x) for the 1973 entering classes of 15 American law schools and the corresponding grade point averages (y) are as Using the S-PLUS function lsfitci, verify that the .95...

The average LSAT scores (x) for the 1973 entering classes of 15 American law schools and the corresponding grade point averages (y) are as

Using the S-PLUS function lsfitci, verify that the .95 confidence interval for the slope, based on the least squares regression line, is (0.0022, 0.0062).