Question

Question 1 of 7 (1 point) Attempt 1 of 1 View question in a pour och 30m Remaining 8.1 Section Exercise 33-36 A sample of size n=63 is drawn from a population whose standard deviation is o - 48. co Part 1 of 2 (a) Find the margin of error for a 95% confidence interval for J. Round the answer to at least three decimal places. The margin of error for a 95% confidence interval for u is Part 2 of 2 (b) If the sample size were n-52, would the margin of error be larger or smaller? (Choose one) because the sample size is (Choose one)

Answer 1

solutions n= 63 Girent L=0.05 6=4-8 stri eritrotts boo @ part-1 0-000 sto.o3914 av Margin of emor = bolist +701 zi tzot Zay ( ) = 20.05 (43) 163 2- 20:05_ 20.025 = 1.96 Z from table ri = 1:36 (48 - 11.8529 DE =11.853 954. confidence interval The margin of emos for a for us is 11.853 25 part-II let n=52 ME - Zag

= 1.96 (48 V52) 15 = 13.0465 13.047 Ime Margin of emor lorger because the sample size 20 is smaller