statistics

Try It! and B. 1,250 hours and standard 4. Compare Brand C, with mean deviation 83 hours, to Brands A CHECK ANSWER 10 Frequency N o 2s mean: 1200 hours 1000-1049 Brand A 10 1050-1099 Frequency 1100-1149 1150-1199 1200-1249 75.5 hours standard deviation: Hours 1000-1049 1250-1299 Brand B 1050-1099 1300-1349 1100-1149 1350-1399 1150-1199 1400-1449 1200-1249 1450-149 1250-1299 1300-1349 1350-1399 1400-1449 1450-1499