. Question 1? '31 pt '0 1 If n=23, lx-bar}=44, and 5=?_, find the margin of error at a 90% confidence level Give your answer to two decimal places. . Question 19 I211 pt '0 1 A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only.r wants a 8% margin of error at a 95% confidence level, what size of sample is needed? Give your answer in whole people. ' Question 2!] I31 pt '0 1 Express the confidence interval [4.3 [H]: 3. 72.9 9": ] in the form of ii :|: ME. Dim . Question 21 E 1 pt '0 1 In the country of United States of Heightlandia, the height measurements of ten-year-old children are approximately normally distributed with a mean of 53.5 inches, and standard deviation of 6.2 inches. A} What is the probability that a randomly chosen child has a height of less than 53.? inches? Answer_ {Round your answer to 3 decimal places.} B] What is the probability that a randomly chosen child has a height of more than 35.5 inches? Answer_ {Round your answer to 3 decimal places.) . Question 22 E 1 pt '53 1 A study of health care cosis for coronary angioplasty versus coronary bypass surgery at a London hospital showed an average cost of 8,450 pounds with a standard deviation of NE pounds for 25G angioplasties and an average cost of 3,5 pounds with a standard deviation of 225 pounds for 299 bypass surgeries. Is this sufficient evidence to say that the average cost of angioplasty is less than the average cost of bypass surgery? 0 p s: .001 so this is very strong evidence that angioplasty costs less. 0 p is between .U1 and .01 so this is strong evidence that angioplasty costs less. O p is between .[}1 and . so this is moderate evidence that angioplasty costs less. 0 p is between .DE and .1 so there is some evidence that angioplasty costs less. 0 p I} ll] so there is little evidence that angioplasty costs less