Answers with formula and no excel

Module 5: Attempt re... (no subject) - kaylaki.. https://eclass.srv.ualb. Fraction to Decimal C.. SS A correct answer is 0.1003, which can be typed in as follows: 0. 1003 A correct answer is " fail to reject" . A correct answer is " does not provide" Question 14 A survey of randomly selected university students found that 91 of the 107 first-year students and 93 of the Correct 139 second-year students surveyed had purchased used textbooks in the past year. Mark 3.00 out of 3.00 (a) Construct a 90% confidence interval for the difference in the proportions of first-year and second-year Flag university students who purchased used textbooks. (Round your answers to 4 decimal places, if needed.) question Answer: (0.0946 , 0.2682 (b) If a 95% confidence interval for the difference in proportion of first-year and second-year university students who purchased used textbooks is (0.078, 0.2848). Give an interpretation of this confidence interval. We know that 95% of the first-year students bought between 7.8% and 28.48% higher than the proportion of second-year students who bought used textbooks. We are 95% confident that, at this university, the proportion of second-year students who bought used textbooks is between 7.8% and 28.48% higher than the proportion of first-year students who bought used textbooks. We are 95% confident that the first-year students at this university bought between 7.8% and 28.48% more used textbooks than second-year students. We know that 95% of all random samples done on the population will show that the proportion of first- year students who bought used textbooks is between 7.8% and 28.48% higher than the proportion of second-year students who bought used textbooks. We are 95% confident that, at this university, the proportion of first-year students who bought used textbooks is between 7.8% and 28.48% higher than the proportion of second-year students who bought used textbooks. Your last answer was interpreted as follows: 0.0946 MacBook Pro IK & A 5 6 8 9 O