You may need to use the appropriate appendix table or technology to answer this question.A magazine conducts an annual survey in which readers rate their favorite cruise ship, All ships are rated on a 100-point scale, with higher values indicating better service. Asample of 36 ships that carry fewer than 500 passengers resulted in an average rating of B5.47, and a sample of 44 ships that carry 500 or more passengers provided anaverage rating of 81.90. Assume that the population standard deviation is 4.55 for ships that carry fewer than 500 passengers and 3.97 for ships that cary S00 or morepassengers.(a) What is the point estimate of the difference between the population mean rating for ships that carry fewer than 500 patsengers and the population mean rating forships that carry 500 or more passengers? (Use smaller cruise ships - larger cruise ships.)(b) At 95% confidence, what is the margin of error? (Round your answer to two decimal places.)(c) What is a 95% confidence interval estimate of the difference between the population mean ratings for the two sizes of ships?(Use smaller cruise ships - larger cruise ships. Round your answers to two decimal places.)207X to 5.88

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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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You may need to use the appropriate appendix table or technology to answer this question. The following results come from two independent random samples taken of two populations. Sample 1 n₁ = 60 X₁ = 13.6 01 = 2.4 (a) What is the point estimate of the difference between the two population means? (Use X₁ - X₂.) Sample 2 7₂ = 35 x2 = 11.6 (b) 02 = 3 Provide a 90% confidence interval for the difference between the two population means. (Use x₁ - x2. Round your answers to two decimal places.) to (c) Provide a 95% confidence interval for the difference between the two population means. (Use x₁ − ×₂. Round your answers to two decimal places.) to
Find the standard deviation of the following data: 13,18,13,14,13,16,14,21,13
Six different second-year medical students at Bellevue Hospital measured the blood pressure of the same person. The systolic readings (in mmHg) are listed below. Find the range, variance, and standard deviation for the given sample data. If the subject's blood pressure remains constant and the medical students correctly apply the same measurement technique, what should be the value of the standard deviation?
Most graduate schools of business require applicants for admission to take the Graduate Management Admissions Council GMAT examination. Scores on the GMAT are roughly normally distributed with a mean of 527 and a standard deviation of 112. How high must an individual score on the GMAT in order to score in the lowest 11%?
Use a normal distribution table or a statistical calculator to answer this question. A farm produces 10,000 eggs in a day. The mean mass of an egg is 59 grams. The standard deviation is 5 grams. An egg is "extra-large" if it has a mass between 63 and 69 grams. To the nearest ten eggs, how many extra-large eggs does the farm produce in a day?
We considered the differences between the temperature readings in January 1 of 1968 and 2008 at 51 locations in the continental US in Exercise 5.19. The mean and standard deviation of the reported differences are 1.1 degrees and 4.9 degrees respectively. see attachment
Salaries for teachers in a particular elementary school district are normally distributed with a mean of $47,000 and a standard deviation of $4,600. We randomly survey ten teachers from that district. (Round your answers to the nearest dollar.)a. Find the 90th percentile for an individual teacher's salary b. Find the 90th percentile for the average teacher's salary.
Find the standard deviation for the following data set. 2, 2, 2, 5, 5, 6, 6, 8, 8, 9 A. 2.49 B. 2 C. 5 D. 6.21 Which is the correct answer?
Find the standard deviation of the following data :49,63,46,58,52,60,54
Find the mode, mean, and standard deviation of the following data: 3, 2, 3, 4, 6
The University of Montana admission standards require students to have an ACT score of at least 22. We know that Montana ACT scores are normally distributed with a mean of 20.1 and a standard deviation of 4. A: Students in Oregon have a mean ACT score of 21.1 with a standard deviation of 2.8. If we chose one student each at random from Oregon and from Montana, which student would be more likely to meet the ACT requirements of the University of Montana? Explain your answer using the appropriate statistics and a correctly labeled and shaded normal distribution. B: We know that the Montana ACT scores are normally distributed with a mean of 20.1 and a standard deviation of 4. Assume that the top 2% of individuals in the state are eligible for a state-funded scholarship. What score does an individual need on the ACT to be eligible? Explain your answer using the appropriate statistics and a correctly labeled and shaded normal distribution
Based on data from the 2000 Census the average age of a Baldwin County, Alabama resident is 39 years with a standard deviation of 22. 6 . The data is normally distributed. The median age, in years, is: Group of answer choices 23 29 39 20

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