Company CoSport
Blockbuster
Sample size
Sample mean
Standard deviation of the 0.4 (CoSport)
distribution of sample means, 0.6 (Blockbuster)
Creating a Data Model
2. To help evaluate the original report, draw a normal curve for the data Marjin-
O'Heara collected. Include the values of the mean and the first three standard
deviations in your sketch. (4 points: 1 point for the curve, 3 points for correct critical
values)