Question

Most pregnancies are full term, but some are preterm (less than 37 weeks). Of those that are preterm, they are classified as early (less than 34 weeks) and late (34 to 36 weeks). A report examined those outcomes for one year, broken down by age of the mother. Is there evidence that the outcomes are not independent of age group? Under 20 20 to 29 30 to 39 40 or Over Early Preterm 129 249 163 Late Preterm 275 593 428 39 24 Choose the correct null and alternative hypotheses below. O A. Ho: Age group and outcome are not independent. Ha: Age group and outcome are independent. O B. Ho: The proportions of early/late preterm births are the same for all age groups. HA: The proportions of early/late preterm births are not the same for all age groups. O C. Ho: Age group and outcome are independent. Ha: Age group and outcome are not independent. OD. Ho: The proportions of early/late preterm births are not the same for all age groups. HA: The proportions of early/late preterm births are the same for all age groups. Compute the x statistic. (Round to three decimal places as needed.)

Answer 1

Solution' ; most po qanadore fort term, bu Cory km - Regulired information its gibno, Coly preborn Lok preko cente ao 015 593 ob to 09 end 09 163 24 LOB 09 110 01 olby Calculati @ choose the Correct roll and chernative hypoth sis: We have to obtained the pull and alternative 24 polbeces are Here, seu hypotheses Hol: Age group and Och.come are independent. and, Atlematike Hypo tHESS JP and OCH Come ore not indepen Clost. Comparte 1 - Statistici ble have to oblained the chi-xcore test Gatictic by casino gilor Calais, cere, lale.peternos 2+5 129 observed Lolosaldicalice Carly preterm cander so Do to Q9 2019 Bo to 39 Total 0104 થવારે 541 593 163 428 63 39 Ho orolar Total 1985 1900

> Capected lakees are, lat 100 9999 Co pielem. Lalcore kan C1051) 1000 100.1968 - 083.8621 (565 V 840 DO (050.3951 (1035-1802) 1000 Baia09 -69446157) 540.9999 565 X 591 Boto 29 1900 -175.4444) 6354591 1000 -011525507 (235*63) 1900 -44.2657) 60.9994 40 or Olbr 66563) 1900 = (18. +34a] 1899.999 1884.999 olan 564.999 Lobsented 129 Groothed Cot) Co-62 6-6²/E 120-136B 8.8632 +8.5563 0.65089 383.8631 -8.8601 78.55950.27643 275 2CL9 593 163 2503802 -1. BBUR 1.21600 0.0076522 591.26757 1.3843 1, 21628 0.00323416 1915: 7447-19.44147 162 (12-13 0.22u32 ul5.2552 IQ+448 162.01299 0-3911568 18. 1342 5.2650 97.7286 1. CIB 0105 (141.265+ 1-5.265794.40570-60604+ (108 39 Total - Co-Edele = 4:1663 =140363)

82. kushistoricic. is 182 (1263 ) There for po test- istatistics : [<1.8631 @ Find th: Clanis he hale to obtained the palera by asing gilma Eler, Ptalie is, p Kabwe [ 82tist, df=66 1) (6-1) 7 = CUI-D (0-1) | =:08) CW -C8=test, 3] = 641-063, 3] = 10.92018 ] There fore, P value is 0·02018) - we hale to compared pllake and a=ool it, the Elere pllakie > 0.00018 SI 0-OJ Faiad to rejected the same hypothesis at v=0.01

(Slate the Conclusion: kle hale to conclude that the grearrthal - The pllako its Gere, value its grearothan or Encral to the loial. of significano d=001. Chere is insufficient evidence to reject Ho, and Conclude that are group and octt come are botu