The data show the time intervals after an eruption to the ne

The data show the time intervals after an eruption (to the next eruption) of a certain geyser. Find the regression equation, letting the first variable be the independent (x) variable. Find the best predicted time of the interval after an eruption given that the current eruption has a height of 92 feet. Use a significance level of 0.05. Height(ft) 115 124 75 75 130 74 98 87 Interval after (nm) 84 78 65 69 81 72 65 66 Click the icon to view the critical values of the Pearson correlation coefficient r. What is the regression equation? y = + x (Round to iwo decimal places as needed.) What is the best predicted value? y minutes (Round to one decimal place as needed.)

Solution

The regression equation is y = 47.9 + 0.253x.

Predicted value is: 47.9 + 0.253(92) = 71.2 min.