2.Suppose a friend of yours took a class last semester in a course where the grades wereweighted, as follows:QuizzesTest 1Test 2Test 3LabFinal10%15%20%20%10%25%and their grades in those areas were 87, 45, 56, 67, 53, 88What was their weighted average in the courşé?

Answered: 2. Suppose a friend of yours took a…

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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2.) ProportionsOn April 15th, 1912, the R.M.S. Titanic sank into the North Atlantic Ocean, resulting in the loss of more than 1,500 passengers and crew. Below is a table which summarizes the total number of passengers and the number of survivors for the crew, first-, second-, and third-class. Find the proportion of survivors by type of service (crew, first, second, third). Test the hypothesis at the 95% confidence level that the proportion of first-class survivors is the same as .50. What do you calculate for the test-statistic? What is the critical statistic? What is the conclusion of your hypothesis test? Class Passengers Survived Crew 885 212 First 325 202 Second 285 118 Third 706 178 Total 2201 710
The director of library services at a college did a survey of types of books (by subject) in the circulation library- Then she used library records to take a random sample of 888 books checked out last term and classified the books in the sample by subject. The results are shown below. Percent of Books on Subject in Circulation Library on This Subject 32% Number of Books in Sample on This Subject 265 Subject Area Business Humanities 25% 20% 226 Natural Science Social Science 224 15% 104 All other subjects 69 Using a 5% level of significance, test the daim that the subject distribution of books in the library fits the distribution of books checked out by students. (a) What is the level of significance? State the null and alternate hypotheses. O Hg: The distributions are the same. H: The distributions are the same. O Hg: The distributions are different. H: The distributions are different. O Hg: The distributions are different. H: The distributions are the same. O Hg: The distributions…
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To evaluate the performance of students of a course, an instructor used a quiz worth 15%, a test worth 25%, and a final exam worth 60%. Out of 100, if a student got 85 in the quiz, 74 in the test, and 89 in the final exam, what was the average mark of the student in the course? O A. 82.67 O B. 84.65 O C. 74.00 O D. 85.00
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2. Suppose a friend of yours took a class last semester in a course where the grades were weighted, as follows: Quizzes Test 1 Test 2 Test 3 Lab Final 10% 15% 20% 20% 10% 25% and their grades in those areas were 87, 45, 56, 67, 53, 88 What was their weighted average in the courşé?