The students in Mr. Shenk’s class measured the arm spans and heights (in inches) of a random sample of 18 students from their large high school. Here is computer output from a leastsquares regression analysis of these data. Construct and interpret a 90% confidence interval for the slope of the population regression line. Assume that the conditions for performing inference are met.

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Predictor Coef Stdev t-ratio Constant 11.547 5.600 2.06 0.056 0.84042 10.39 Armspan S= 1.613 0.08091 0.000 R-Sq = 87.1% R-Sq(adj) = 86.3%