Mercury Concentration in DolphinsEnvironmental scientists

Chapter 2, Problem 47

(choose chapter or problem)

Mercury Concentration in DolphinsEnvironmental scientists are increasinglyconcerned with the accumulation of toxic elementsin marine mammals and the transfer of such elementsto the animals offspring. The striped dolphin(Stenella coeruleoalba), considered to be a toppredator in the marine food chain, was the subjectof one such study. The mercury concentrations (micrograms/gram) in the livers of 28 male stripeddolphins were as follows:1.70 183.00 221.00 286.001.72 168.00 406.00 315.008.80 218.00 252.00 241.005.90 180.00 329.00 397.00101.00 264.00 316.00 209.0085.40 481.00 445.00 314.00118.00 485.00 278.00 318.00a. Calculate the five-number summary for the data.b. Construct a box plot for the data.c. Are there any outliers?d. If you knew that the first four dolphins were allless than 3 years old, while all the others were morethan 8 years old, would this information help explainthe difference in the magnitude of those fourobservations? Explain.