GENERAL INSTRUCTION. Answer the following problems and show your complete solution including the formula used in the problem. MAGIC is strictly prohibited! 9. The number of packs of cigarettes sold by five randomly selected cigarette vendors of the east side of the city and by five randomly selected cigarette vendors on the west side of the city per week are given in the table below. Construct a 99% confidence interval for the true difference between the mean number of cigarette packs sold by the east and west side vendors. Does this suggest that East Side vendors sell more cigarettes than the West Side vendors? East Side 47 56 32 59 51 West Side 38 19 50 40 58