The following scatter plot shows the weight (in pounds) and the number of hours slept in a day by a random sample of infants. A pediatrician wants to know if there is any correlation between these two factors. Infants' weights and their number of hours of sleep 15 y =-0.2145x + 15.981 14.5 R = 0.7152 14 Hours slept 13.5 13 12.5 12 B 10 12 14 16 weight (a) The independent variable is | Select an answer v (b) The dependent variable is | Select an answer V Round your answer for part (c) to 2 decimal places. (c) The value of the correlation coefficient is State the numerical part of your answer for part (d) accurate to 4 decimal places. (d) With every pound increase in an infant's weight, the number of hours of sleep | Select an answer v | by hours,Round your answers for parts (e), (f) to 2 decimal places and express your answers in percentage form (1.e. 3.00% instead of 0.03). (e) What percentage of total variation in the number of hours slept in infants can be explained by their weight? (f) Predict the number of hours of sleep in a day by an infant who weighs 9 pounds