To investigate the relationship between yield of potatoes and level of fertilizer application, a researcher divides a field into eight plots of equal size and applies differing amounts of fertilizer to each. The yield of potatoes in pounds and the amount of fertilizer in pounds are recorded for each plot. The data are as follows: Fertilizer (pounds), x Yield (pounds), y
1 25
1.5 31
2 27
2.5 28
3 36
3.5 35
4 32
4.5 34
Find the prediction equation for the regression of yield on fertilizer. Round values to four decimal places.
a. ˆy=24.4524+2.3810x
b. ˆy=27.6073+1.3872x
c. ˆy=22.1023+2.9840x
d. ˆy=25.1523+2.1511x

Which of the following statements are true? (select all that apply.) a quasi-static process is one in which the system is never far from being in equilibrium. when a system can go from state 1 to state 2 by several different processes, the amount of heat absorbed by the system will be the same for all processes. the internal energy of a given amount of an ideal gas depends only on its absolute temperature. when a system can go from state 1 to state 2 by several different processes, the work done on the system will be the same for all processes. when a system can go from state 1 to state 2 by several different processes, the change in the internal energy of the system will be the same for all processes. for any substance that expands when heated, its cp is greater than its cv.