Question 5 a randomized controlled trial is run to

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Question 5 A randomized controlled trial is run to evaluate the effectiveness of a new drug for asthma in children. A total of 250 children are randomized to either the new drug or placebo (125 per group). There are 63 boys assigned to the new drug group and 58 assigned to the placebo. Is there a statistically significant difference in the proportion of the boys assigned to the treatments? Apply the appropriate test at a 5% level of significance (1) Critical value = +/- 1.96 (2) computed statistics 0.63 (3) Based on comparing the computed statistics to the critical value which of the following is (are) true? (a) There is significant evidence, alpha =0.05, that there is a difference in the proportions of boys assigned to the treatments (b)
Question 6 A clinical trial is conducted to investigate the effectiveness of an experimental drug in reducing preterm delivery to a drug consigned standard care and to placebo. Pregnant women are enrolled and randomly assigned to receive either the experimental drug, the standard drug or placebo. Women are followed through delivery and classified as delivery preterm (>37 weeks) or not The data are shown below. Is there a statistically significant difference in the proportions of women delivery preterm among the THREE treatments groups? Apply the test of 5% level of significance.
3. computed value = 8.96
4. based on comparing the computed chi square with the critical values for the Chi square which of the following is (are) true?

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