Mathematics, 09.04.2020 17:07, Daruk
A university is contemplating switching from the quarter system to the semester system. The administration conducts a survey of a random sample of 300 students and finds that 180 of them prefer to remain on the quarter system. a. Construct a 95% confidence interval for the true proportion of all students who would prefer to remain on the quarter system. b. Does the interval you computed in part (a) provide convincing evidence that the majority of students prefer to remain on the quarter system? Explain. c. Now suppose that only 50 students had been surveyed and that 30 said they preferred the quarter system. Compute a 95% confidence interval for the true proportion that prefers to remain on the quarter system. Does the interval provide convincing evidence that the majority of students prefer to remain on the quarter system?d. Compare the sample proportions and the confidence intervals found in parts (a) and (c). Use these results to discuss the role sample size plays in helping make decisions from sample data.
Answers: 3
Mathematics, 21.06.2019 14:30, meandmycousinmagic
Select the correct answer. what is the surface area of the victory podium shown here? include all surfaces of the podium, including the bottom. a. 61.5 square feet b. 61.75 square feet c. 65.25 square feet d. 69 square feet
Answers: 2
Mathematics, 21.06.2019 18:30, bvaughn4152
The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.
Answers: 1
Mathematics, 21.06.2019 19:30, 100738
Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2
Answers: 1
A university is contemplating switching from the quarter system to the semester system. The administ...
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