Consider the following data for a dependent variable y and two independent variables, x and z: 12, 29, 13, 44, 46, 11, 109, 25, 17, 113, 50, 17, 179, 40, 5, 95, 52, 20, 175, 74, 8, 171, 37, 12, 117, 59, 13, 142, 77, 17, 211.
Enter negative values as negative numbers, if necessary.
a. Develop an estimated regression equation relating y to z1. (Round your answers to two decimal places.)
y =
b. Develop an estimated regression equation relating y to z2. (Round your answers to two decimal places.)
y =
Predict y if x = 45. (Round your answer to the nearest whole number.)
y =
Predict y if z = 15. (Round your answer to the nearest whole number.)
y =
Develop an estimated regression equation relating y to x and z. (Round your answers to two decimal places.)
y =
Predict y if x = 45 and z = 15. (Round your answer to the nearest whole number.)
y =