Use a normal probability plot to asses whether the sample data could have come from a population that is normally distributed. 8) The following data represent a random sample of the number of shares of a pharmaceutical company's stock traded for 20 days in 2000. 4.28 9.2 10.7 7.82 14.14 5.59 9.99 9.24 12.4 13.55 4.54 8.84 11.89 7.05 27.84 8.01 10.44 4.58 7.54 11.18