Problems. 1. A research team conducted a study to determine the effect of fertilizer on the growth rate of soybean crops. The team tested 500 fertilized crop sites and reported an average of 27 days to mature, compared to the overall average of 19 days. (a) Determine whether the study is an experimental or an observational study. (b) Identify the sample and the population. (c) Is the value "19 days" a statistic or a parameter? (d) Identify a major problem with the study. 2. A nurse recorded the amount of IV fluid remaining for each patient in her unit. Below are her recorded values, rounded to the nearest mL. 644 281 371 202 493 848 142 Find the 5-number summary for the data. Is the data discrete or continuous? 2