Question

Question Help A study reported the results of a randomized trial of whole body hypothermia (cooling) for neonatal hypoxie-ischemic encephalopathy (brain problems in babies due to lack of oxygen). Twenty-nine of the 4 infants randomly assigned to hypothermia died and 45 of the infants in the control group died Complete parts (a) and (b) below. a. Find and compare the sample percentages that died for these two groups The percentage of babies in the treatment group that died was (Type an integer or decimal rounded to two decimal places as needed) The percentage of babies in the control group that died was I (Type an integer or decimal rounded to two decimal places as needed) The death rate was greater for babies in the group b. Test the hypothesis that the death rate was less for those treated with hypothermiasta 0.10 significance level. Let y represent the proportion of babies with these problems that would die ter receiving hypothermia treatment and let y represent the proportion of babies with these problems that would die without treatment. Write the hypotheses for the test as Ho H put Find the test satiste for this test =crud Round to two decimal places as needed) plicat Find the value for this test apter D-value - Round to three decimal places as needed rado What is the concluson for his best? Unicance level of 0.10 the nul hypothes The came for babes treated with others Peder for the control groue Grading Enter your answer in each of the answer boxes Tools for success ¡D 1 e Type here to search DELL

Answer 1

Answer The treatment diod percentage of babies in the group was 2.9 30,85 % x 100 94 The percentage babies in the control group that died was P2 x 100 45.92% 98 b) Given 0:10 30,85%. P 0.3085 n = 94 1 45.92% = 0.4592. P2 - 1 Ho: P = P2 VS Hap, <P₂ 1.0.3085 I-P 0,6915 1-0.4592 = 0.5408 9 11 1-P2 Pi-P₂ Test statistic Z Pin P292 n 0.3085 -0.4592 z (0:4592 * 0.5408) (6.3085 0.6915) 94 + 98 -0.1507 0,06931 2. 174379 Z 2.17 P-value P(Z <-2017) P 0.0148 0.015

reject Ho. Conclusion < x=0,10 we P-value Here babies Reject the null hypothesis. The death rate for the is less than the death rate treated with hypothermia for the control group.