categorize the procedure by choosing the corr...
categorize the procedure by choosing the correct type of observational study or designed experiment. observational study designed experiment prospective double - blind retrospective completely randomized (b) which one of the following best describes the explanatory (independent) and response (dependent) variables? the explanatory variable is the brand of fertilizer and the response variable is the sunlight. the explanatory variable is the brand of fertilizer and the response variable is the average corn yield. the explanatory variable is the average corn yield and the response variable is the brand of fertilizer. the explanatory variable is the sunlight and the response variable is the average corn yield. (c) suppose there is a significant difference in the average yields between the corn crops grown with plantx and the corn
Answer
# Brief Explanations:
(a) Since no information about the procedure is given before the options for observational study or designed - experiment, we can't determine the answer precisely. But in general, an observational study just observes and records data without manipulating variables, while a designed experiment manipulates one or more factors to observe the effect on a response variable. Prospective and retrospective are types of observational studies, and double - blind and completely randomized are types of designed experiments.
(b) The explanatory (independent) variable is the one that is manipulated or changed to see its effect on another variable. Here, the brand of fertilizer can be manipulated, and it is expected to affect the average corn yield. So the brand of fertilizer is the explanatory variable and the average corn yield is the response variable.
(c) The question is incomplete.
# Answer:
(a) Insufficient information to answer.
(b) The explanatory variable is the brand of fertilizer and the response variable is the average corn yield.
(c) Incomplete question.