The following data set represents the number of drive-in movies in 1970s in the United States for a sample period of 14 years.

2084 1497 1014 910 899 870 837 859 848 826 815 750 637 737

15. The Z-score corresponding to the data point of 837 is nearly: A. -0.354 B. 0.354 C. -0.325

16. The cumulative probability under the standard normal curve corresponding to the Z-score obtained in part 15 is. A. 0.362 B, 0.373 C. 0.351

17. The difference in the actual cumulative relative frequency up to the data point 837 (as calculated in part 11) and the cumulative normal probability up to 837 (as calculated in part 16)) is: A. 0.006 B. 0.066 C, 0.071