ON Consumer Reports provides performance and quality ratings for numerous consumer products. The overall ratings (score) were provided for a sample of 7 mid-priced VCRs in the Consumer Reports 1992 Buying Guide. The manufacturer brands and overall scores are as follows: Manufacturer Price ($) Score Fisher 75 77 General Electric 82 81 Hitachi 105 89 JC Penny 86 78 JVC 89 78 Magnavox 73 80 Montgomery Ward 70 78 a. determine the sample mean, median, variance and standard deviation for the variable Price; b. determine the 80th percentile, the first quartile and the IQR for the variable Price; c. determine the coefficient of variation for the variable Price