An electronics store is selling a laptop for $760 at several of its locations. The production costs for this model of laptop have been included in the graph, along with the expected revenue. How many laptops must the electronics store sell to break even?
160.000
WWW
-50,000
40,000
Total (dollars)
-30,000
Cx)
20,000
1,800
50
160
Number of Laptops
4

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.