a researcher is comparing three new formulas for grass - killer. to conduct the experiment, the researcher…

a researcher is comparing three new formulas for grass - killer. to conduct the experiment, the researcher purchases 30 pieces of sod from a local vendor and selects the treatment groups by placing slips of paper numbered 1 - 30 in a hat. to make three groups for the three formulas, the researcher randomly selects 10 numbers, making sure to mix the slips between each selection, to get the formula 1 group. then the researcher selects 10 more numbers to get the formula 2 group. the remaining 10 numbers make up the formula 3 group. which component is missing from the researchers process? the researcher did not randomly pick the vendor. the researcher did not randomly pick the 30 pieces of sod. the researcher did not assign a treatment to each group of sod. the researcher did not label the pieces of sod before randomly selecting them.

a researcher is comparing three new formulas for grass - killer. to conduct the experiment, the researcher purchases 30 pieces of sod from a local vendor and selects the treatment groups by placing slips of paper numbered 1 - 30 in a hat. to make three groups for the three formulas, the researcher randomly selects 10 numbers, making sure to mix the slips between each selection, to get the formula 1 group. then the researcher selects 10 more numbers to get the formula 2 group. the remaining 10 numbers make up the formula 3 group. which component is missing from the researchers process? the researcher did not randomly pick the vendor. the researcher did not randomly pick the 30 pieces of sod. the researcher did not assign a treatment to each group of sod. the researcher did not label the pieces of sod before randomly selecting them.

Answer

Brief Explanations:

The researcher has randomly selected the treatment groups but has not assigned the actual grass - killer formulas (treatments) to each group of sod. Randomly picking the vendor or the sod pieces is not the main issue here, and labeling the pieces before selection is not a necessary step for this experiment.

Answer:

The researcher did not assign a treatment to each group of sod.