25. You conduct a study to determine the impact that varying the amount of noise in an office has on worker productivity. You obtain the following productivity scores.

Condition 1: Low Noise Condition 2: Medium Noise Condition 3: Loud Noise 15 13 12 19 11 9

13 14 7

13 10 8

(a) Assuming that productivity scores are normally distributed ratio scores, com¬ pute the summaries of this experiment,

(b) Draw the appropriate graph for these data,

(c) Assuming that the data are representative, draw how we would envision the populations produced by this experiment,

(d) What conclusions should you draw from this experiment?