The heart rates (in beats per minute) and QT intervals (in milliseconds) for 13 males (the figure given below shows the QT interval of a heartbeat in an electrocardiogram)

Electrocardiogram

(a) x = 120 beats per minute

(b) x = 67 beats per minute

(c) x = 90 beats per minute

(d) x = 83 beats per minute

Find the equation of the regression line for the data. Then construct a scatter plot of the data and draw the regression line. (Each pair of variables has a significant correlation.) Then use the regression equation to predict the value of y for each of the x-values, if meaningful. If the x-value is not meaningful to predict the value of y, explain why not. If convenient, use technology.

Transcribed Image Text:

QT Interval Heart rate, r 60 75 68 8497 66 QT interval, y 403 363 381 367 34 317 401 Heart rate, 65 86 78 93 75 88 QT interval, y 384 342 377 329 377 349