Suppose you compute a 95% confidence interval for the sample average to be [12.88, 18.12],where the sample is very large. Knowing only this, would you reject the null that the sampleaverage equals 20 against the two-sided alternative that it does not equal 20 at the 1% significancelevel?YesNoO Maybe it depends on the value of the sample averageO Not enough information provided

Given that, Suppose you compute a 95% confidence interval for the sample average to be [12.88,…

Answered: Suppose you compute a 95% confidence…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Crunch x + /courses/50327/quizzes/268370/take/questions/6536021 Mstructor via Chans possibi Make sure to take a screenshot of the last question you were working on and attach it to the email. D Question 2 33 When 390 junior college students were surveyed, 115 said that they have previously owned a motorcycle. Determine the point estimate to construct a 99% confidence interval of college students that have previously owned a motorcycle. Round your result to three decimal places: 29.487 Determine the critical value to construct a 99% confidence interval of college students that have previously owned a motorcycle. Round your result to two decimal places: 2.58 Calculate the Margin of Error for a 99% confidence interval of college students that have previously owned a motorcycle. Round your result to three decimal places: 4.114 Make sure to attach your work to this Quiz (see last question on quiz). Previous 10 Λ & Next▸ 3 pts
Prof. Gersch knows that the score on a standardized test is perfectly normal with unknown mean and a standard deviation of 50. He then takes a random sample of 25 tests and finds that the average of these is 200. How many exams should he sample so that the maximum margin of errorfor his 95% confidence interval is 10?: a. 98 b. 97 c. 100 d. 96 e. 10
Assume that from a sample of 100 tires the tire pressure has a 95% confidence interval given by 32 Pounds Per Square (PSI) Inch + 3 PSI. What is the Error Term? What are Upper and Lower values of the confidence interval? What is the Standard Error? What are the Upper and Lower values for a 99% Confidence Interval? Discuss about the probability that another data sample of 100 tires would show a sample mean equal to 38 PSI.
In order to estimate the percentage of adults who file their taxes at least two weeks be deadline, a 99% confidence interval is constructed. The interval ends up being from 0.756 to 0.864. Which of the following could be a 90% confidence interval for the same sample data? I. 0.749 to 0.871 II. 0.776 to 0.844 III. 0.765 to 0.875 IV. 0.799 to 0.841 OI only OIV only None of the answer options are reasonable 90% confidence intervals. III only O II only
In this question 0.0321% is not a percentage but a proportion so it shouldn't have the % symbol
Suppose a test is given to 20 randomly selected college freshmen in Ohio. The sample average score on the test is 12 points and the sample standard deviation is 4 points. Suppose the same test is given to 16 randomly selected college freshmen in Iowa. The sample average score on the test is 8 points and the sample standard deviation is 3 points. We want to test whether there is a significant difference in scores of college freshmen in Ohio versus Iowa. Does the 90% confidence interval indicate that there is evidence of a difference in population means? Group of answer choices Yes Not enough information No
27)
Can anyone get this right. I've tried multiple answers, but none of them are correct. One picture has the info needed and thr other one contains the actual question for the confidence level. The answer is NOT WHAT'S PICTURED OR 2.547, 6.547
12. A new manufacturing process of component parts is being considered. Samples were taken improves the proportion of defective components. 1425 of 1500 components from the existing process and 1920 of 2000 components from the new process were found to be non-defective. 75 80 P1 = = 0.05, P2 = 0.04 and Pi - P2 = 0.05 - 0.04 = 0.01 1500 2000 a. Find a 99% confidence interval for the true difference in the fraction of defectives between the existing and the new processes? b. Based on your answer in (a), is there any significant difference between the existing and the new processes? Justify?
Please help for the first one wrong, it wasn’t 4.49
Mr. Roby is trying to estimate the difference in the proportion of his male students who on average sleep fewer than 6 hours per night compared with his female students. He selects a random sample of 20 of his 75 male students and finds that 5 of them sleep fewer than 6 hours per night. He selects another random sample of 17 of his 100 female students and finds that 8 of them sleep fewer than 6 hours a night. Check the conditions for constructing a confidence interval for the difference in proportions. Random condition: A) metB) not metC) does not apply 10% condition: A) metB) not metC) does not apply Large Counts condition: A) metB) not metC) does not apply Are all the conditions for inference met? A) YesB) NoC) Not enough information
Dr. Higney, an academic researcher in an English department, wants to learn about the average length of a novel. In order to do this, Dr. Higney collects data on the word counts of 200 randomly selected novels. The sample mean of this data set is = 85252 with a sample standard deviation of 8413 words. Using this data, construct a 90% confidence interval for the true mean length of novels. (84,273.50, 86,230.51) (82719.67,89784.33) (94086.04, 96417.96) (80937.53, 90566.47) S

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