According to CleanTechnica website, Sweden's full electric vehicles took a record high 24.1% share of new...

 

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According to CleanTechnica website, Sweden's full electric vehicles took a record high 24.1% share of new sales, with the Kia e-Niro being Swe- den's best-selling full electric vehicle. Suppose you are an employee at a Kia showroom in Sweden. You are asked by your manager to provide an overview of the range that these electric cars can drive on a single bat- tery. A random sample of 54 cars is used. The data are stored in the data file Electric Cars. a. Is there evidence that the data are not normally distributed? b. Find a minimum variance unbiased point estimate of the population mean. c. Find a minimum variance unbiased point estimate of the population variance. 1 Model Country Continent Starting price (euro) Range (km) Battery (kWh) Seats 2 Dacia Spring Electric Romania Europe 17890 230 27.4 4 3 Smart EQ ForFour Germany Europe 17995 130 18 4 4 Smart EQ ForTwo Cabrio Germany Europe 20995 130 18 4 5 Renault Twingo ZE France Europe 20690 190 22 4 6 Seat Mii Electric Germany Europe 21900 260 36.8 4 7 Volkswagen e-Up! Germany Europe 26490 250 36.8 4 8 Smart EQ ForTwo Germany Europe 17995 135 18 2 9 Fiat 500e Italy Europe 24900 180 24 4 10 Renault Zoe 1 Mazda MX-30 France Europe 32790 390 54.7 4 Japan Asia 33390 200 35.5 5 12 Hyundai Kona electric Korea Asia 32795 305 42 5 13 MG ZS EV UK Europe 30985 263 44.5 5 14 Kia e-Soul Korea Asia 33495 276 42 4 15 Volkswagen ID.3 Germany Europe 33490 352 48 5 16 Opel Corsa-e Germany Europe 30599 330 50 5 17 Hyundai IONIQ electric Korea Asia 34015 311 40.4 5 18 Peugeot e-208 France Europe 31950 340 50 5 19 Nissan Leaf Japan Asia 34990 270 40 5 20 Honda e Japan Asia 36190 222 35.5 4 21 Citron -Jumpy / e-Spacetourer France Europe 40790 230 50 7 22 Seres 3 China Asia 37995 329 52 5 23 BMW i3 Germany Europe 40135 310 42.2 4 24 AIWAYS US China Asia 39950 410 63 5 25 Volkswagen ID.4 Germany Europe 39190 346 55 5 26 Kia e-Niro Korea Asia 35995 289 42 5 27 Citron -C4 28 Mini Electric 29 Peugeot e-2008 France Europe 36090 350 50 5 UK Europe 35990 234 32.6 4 France Europe 36930 310 50 5 30 Skoda Enyaq iV Czech Repi Europe 40780 340 55 5 31 Hyundai Ioniq 5 32 DS3 Crossback e-Tense 33 Opel Mokka-e Korea Asia 43500 384 58 5 France Europe 39990 320 50 5 Germany Europe 35399 322 50 5 34 Kia EV6 Korea Asia 44595 394 62 5 35 Tesla Model 3 US North Ame 49990 448 55 5 36 Ford Mustang Mach-E US North Ame 49925 440 75.7 5 37 Polestar 2 Sweden Europe 45900 440 64 5 88 Nissan e-NV200 Evalia Japan Asia 45173 200 40 5 89 Opel Zafira-e Life Germany Europe 53107 230 50 6 10 Audi Q4 e-tron Germany Europe 48295 341 55 5 1 Lexus UX 300e Japan Asia 49990 300 54.3 5 2 Volvo XC40 Recharge Sweden Europe 56495 418 78 5 3 MG Marvel R UK Europe 45985 370 70 5 4 Jaguar I-Pace UK Europe 83072 470 90 5 15 Tesla Model X US North Ame 101000 580 95 5 16 BMW IX3 Germany Europe 67500 459 80 5 7 Mercedes EQC Germany Europe 68095 412 85 5 18 Porsche Taycan 19 Mercedes-Benz EQV 50 Audi e-tron 51 Tesla Model Y Germany Europe 87200 407 79.2 5 Germany Europe 73314 363 100 5 Germany Europe 67706 341 71 5 US North Ame 65015 480 75 5 52 Audi e-tron GT Germany Europe 106366 472 93.4 5 53 Tesla Model S 54 Audi e-tron Sportback 55 BMW iX US North Ame 86005 593 75 5 Germany Europe 70105 346 71 5 Germany Europe 86690 416 77 5 56 According to CleanTechnica website, Sweden's full electric vehicles took a record high 24.1% share of new sales, with the Kia e-Niro being Swe- den's best-selling full electric vehicle. Suppose you are an employee at a Kia showroom in Sweden. You are asked by your manager to provide an overview of the range that these electric cars can drive on a single bat- tery. A random sample of 54 cars is used. The data are stored in the data file Electric Cars. a. Is there evidence that the data are not normally distributed? b. Find a minimum variance unbiased point estimate of the population mean. c. Find a minimum variance unbiased point estimate of the population variance. 1 Model Country Continent Starting price (euro) Range (km) Battery (kWh) Seats 2 Dacia Spring Electric Romania Europe 17890 230 27.4 4 3 Smart EQ ForFour Germany Europe 17995 130 18 4 4 Smart EQ ForTwo Cabrio Germany Europe 20995 130 18 4 5 Renault Twingo ZE France Europe 20690 190 22 4 6 Seat Mii Electric Germany Europe 21900 260 36.8 4 7 Volkswagen e-Up! Germany Europe 26490 250 36.8 4 8 Smart EQ ForTwo Germany Europe 17995 135 18 2 9 Fiat 500e Italy Europe 24900 180 24 4 10 Renault Zoe 1 Mazda MX-30 France Europe 32790 390 54.7 4 Japan Asia 33390 200 35.5 5 12 Hyundai Kona electric Korea Asia 32795 305 42 5 13 MG ZS EV UK Europe 30985 263 44.5 5 14 Kia e-Soul Korea Asia 33495 276 42 4 15 Volkswagen ID.3 Germany Europe 33490 352 48 5 16 Opel Corsa-e Germany Europe 30599 330 50 5 17 Hyundai IONIQ electric Korea Asia 34015 311 40.4 5 18 Peugeot e-208 France Europe 31950 340 50 5 19 Nissan Leaf Japan Asia 34990 270 40 5 20 Honda e Japan Asia 36190 222 35.5 4 21 Citron -Jumpy / e-Spacetourer France Europe 40790 230 50 7 22 Seres 3 China Asia 37995 329 52 5 23 BMW i3 Germany Europe 40135 310 42.2 4 24 AIWAYS US China Asia 39950 410 63 5 25 Volkswagen ID.4 Germany Europe 39190 346 55 5 26 Kia e-Niro Korea Asia 35995 289 42 5 27 Citron -C4 28 Mini Electric 29 Peugeot e-2008 France Europe 36090 350 50 5 UK Europe 35990 234 32.6 4 France Europe 36930 310 50 5 30 Skoda Enyaq iV Czech Repi Europe 40780 340 55 5 31 Hyundai Ioniq 5 32 DS3 Crossback e-Tense 33 Opel Mokka-e Korea Asia 43500 384 58 5 France Europe 39990 320 50 5 Germany Europe 35399 322 50 5 34 Kia EV6 Korea Asia 44595 394 62 5 35 Tesla Model 3 US North Ame 49990 448 55 5 36 Ford Mustang Mach-E US North Ame 49925 440 75.7 5 37 Polestar 2 Sweden Europe 45900 440 64 5 88 Nissan e-NV200 Evalia Japan Asia 45173 200 40 5 89 Opel Zafira-e Life Germany Europe 53107 230 50 6 10 Audi Q4 e-tron Germany Europe 48295 341 55 5 1 Lexus UX 300e Japan Asia 49990 300 54.3 5 2 Volvo XC40 Recharge Sweden Europe 56495 418 78 5 3 MG Marvel R UK Europe 45985 370 70 5 4 Jaguar I-Pace UK Europe 83072 470 90 5 15 Tesla Model X US North Ame 101000 580 95 5 16 BMW IX3 Germany Europe 67500 459 80 5 7 Mercedes EQC Germany Europe 68095 412 85 5 18 Porsche Taycan 19 Mercedes-Benz EQV 50 Audi e-tron 51 Tesla Model Y Germany Europe 87200 407 79.2 5 Germany Europe 73314 363 100 5 Germany Europe 67706 341 71 5 US North Ame 65015 480 75 5 52 Audi e-tron GT Germany Europe 106366 472 93.4 5 53 Tesla Model S 54 Audi e-tron Sportback 55 BMW iX US North Ame 86005 593 75 5 Germany Europe 70105 346 71 5 Germany Europe 86690 416 77 5 56