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Researchers are investigating the association between humidity (percent) and attendance (1000s) at major league baseball games for a random sample of days and stadiums. A 95 percent confidence interval for the slope is constructed for predicting attendance based on humidity, obtaining (-1.32, o.18). Which statement is correct? (A) The association is probably negative because most of the interval is below o. (B) The association must be negative because the interval contains -1 (C) The association is not significant because o is in the interval. (D) The relatively high margin of error, \(0.75,\) makes any conclusion suspect. (E) A calculation error was made because the lower endpoint is below -1

A \(95 \%\) confidence interval for the slope of a regression line is calculated to be \((-0.783,0.457) .\) Which of the following must be true? (A) The slope of the regression line is o. (B) The slope of the regression line is -0.326 . (C) A scatterplot of the data would show a linear pattern. (D) A residual plot would show no pattern. (E) The correlation is negative.