AS is 1809 (###)

you only really need the row for PDX (for me row 42). (1) What is the point estimate for the difference between the fraction of flights out of PDX run by Southwest (WN) and the flights out of PDX run by Alaska (AS)? Please show answer in a complete sentence and/or show your work. (2) What is the confidence interval for this distance (center +/-margin of error) for this difference. Please show your work (what terms you're multiplying/dividing) and answer in a complete sentence. (3) Compute a hypothesis test for the question: is there evidence of a difference between the market share of Alaska vs. Southwest. Write out the null and alternative hypotheses and level of significance alpha. (4) Calculate the test statistic and find the p-value. Please show your work. (5) Write your conclusion. This should both say whether or not you reject the null and say what this means in everyday language. 28 3 Count of Oriolpolumn Label 4 Row Label AA AS BS DL F9 04 HA NK OO WA WN Grand Total 5 ABO 13 13 6 ANO 62 TATL 92 92 8 AUS 31 31 27 27 10 BOI 49 49 11 BOS 44 12 EUR 44 18 27 89 13 CLT 30 14 DAL 31 4 15 DCA 31 31 16 DEN + 178 177 118 502 17 DEN 93 31 124 18 DTW 19 EUG 51 485 57 593 20 EWR 31 50 81 21 FAT 46 46 e2 GEG 31 31 31 60 24 AD 27 27 es UAH 62 25 JFK 31 2631 88 27 KOA 31 31 e8 LAS 115 # 31 62 110 336 e9 LAX 212 139 25 277 31 684 80 LGE 31 31 81 LH 31 31 B2 MCI 4 4 83 MOO 47 47 34 MOW 44 85 MER 446 477 86 MSP 97 97 15 11 172 224 BOGG 62 91 69 ONT 60 27 87 30 ORD 31 44 31 93 199 31 OTH 23 23 2 POX 252 *** 57 618 58 61 670 578 998 5148 33 PHX 93 121 374 54 PSP 75 75 95 ROM 18 438 456 36 RNO 44 27 SAN 121 13 14 148 38 SBA 18 99 SEA 153 64 402 619 30 SFO 212 372 234 818 51 Ele 103 18 157 278 52 SLO 16 166 248 430 53 SME 86 139 225 54 SNA 102 102 55 STL 30 30 36 STS 18 18 57 TUS 61 61 58 Grand Total 504 *# # # # # # # ### ### ### 13385 6 51 you only really need the row for PDX (for me row 42). (1) What is the point estimate for the difference between the fraction of flights out of PDX run by Southwest (WN) and the flights out of PDX run by Alaska (AS)? Please show answer in a complete sentence and/or show your work. (2) What is the confidence interval for this distance (center +/-margin of error) for this difference. Please show your work (what terms you're multiplying/dividing) and answer in a complete sentence. (3) Compute a hypothesis test for the question: is there evidence of a difference between the market share of Alaska vs. Southwest. Write out the null and alternative hypotheses and level of significance alpha. (4) Calculate the test statistic and find the p-value. Please show your work. (5) Write your conclusion. This should both say whether or not you reject the null and say what this means in everyday language. 28 3 Count of Oriolpolumn Label 4 Row Label AA AS BS DL F9 04 HA NK OO WA WN Grand Total 5 ABO 13 13 6 ANO 62 TATL 92 92 8 AUS 31 31 27 27 10 BOI 49 49 11 BOS 44 12 EUR 44 18 27 89 13 CLT 30 14 DAL 31 4 15 DCA 31 31 16 DEN + 178 177 118 502 17 DEN 93 31 124 18 DTW 19 EUG 51 485 57 593 20 EWR 31 50 81 21 FAT 46 46 e2 GEG 31 31 31 60 24 AD 27 27 es UAH 62 25 JFK 31 2631 88 27 KOA 31 31 e8 LAS 115 # 31 62 110 336 e9 LAX 212 139 25 277 31 684 80 LGE 31 31 81 LH 31 31 B2 MCI 4 4 83 MOO 47 47 34 MOW 44 85 MER 446 477 86 MSP 97 97 15 11 172 224 BOGG 62 91 69 ONT 60 27 87 30 ORD 31 44 31 93 199 31 OTH 23 23 2 POX 252 *** 57 618 58 61 670 578 998 5148 33 PHX 93 121 374 54 PSP 75 75 95 ROM 18 438 456 36 RNO 44 27 SAN 121 13 14 148 38 SBA 18 99 SEA 153 64 402 619 30 SFO 212 372 234 818 51 Ele 103 18 157 278 52 SLO 16 166 248 430 53 SME 86 139 225 54 SNA 102 102 55 STL 30 30 36 STS 18 18 57 TUS 61 61 58 Grand Total 504 *# # # # # # # ### ### ### 13385 6 51