Sports car or convertible? The followmg table presents the fuel efficiency, in miles per gallon, for a sample of convertibles and a sample of sports cars. Convertible Model MFG Sports Model MPG Mini Cooper 15 Mazda3 Mazdaspeed 24 Saab 93 24 Subaru Impreza WRX STi 21 BMW 328i :11 Mazda RXaS 18 Toyota Camry Solara 21 Mitsubishi Lancer Evolution 21 Volvo C70 21 Volkswagen GTI 25 Ford Mustang V6 20 Honda CiVic Si 27 Send dale to Excel Partlofa a (a) Find the sample standard deviation of the mileage for the sample of convertibles, Round the answer to at least one decimal place. The sample standard deviation for the convertibles, in miles per gallon, is I 2.0 . Part:1/3 Part 2 of3 (b) Find the sample standard deviation of the mileage for the sample of sports cars, Round the answer to at least one decimal place. The sample standard deviation for the sports cars, in miles per gallon, is I I. X 3 Pay your bills: In a large sample of customer accounts, a utility company determined that the average number at days between when a bill was sent nut and when the payment was made is 27 with a standard deviation of 5 days Assume the data to be approximately bellishaped Part: 0/3 Part lof3 (a) Between what two values Will approximately 68% of the numbers of days he? Approximately 68% oftne customer accounts have payment made between I I and I I days