Students at your college are given the option of choosing a(4)topic for which a speaker will be selected. Students are askedto rank three topics: Technology (T), Environmental Issues(E), and Terrorism in the Name of Religion (R). The resultsof the election are shown in the following preference table.Number of Votes7030105First ChoiceRTTESecond ChoiceERETThird ChoiceTERRa. How many students voted?b. How many students selected the topics in this order:T, E, R?How many students selected technology as their firstchoice for a speaker's topic?d. How many students selected environmental issues astheir second choice for a speaker's topic?

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Answered: Students at your college are given the…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A winter resort took a poll of its 350 visitors to see which winter activities people enjoyed. The results were as follows 178 liked to ski 154 liked to snowboard 57 liked to ice skate 49 liked to ski and snowboard 15 liked to ski and ice skate 2 liked to snowboard and ice skate 2 liked all 3 activities How many people enjoy only skiing? 116 How many people enjoy snowboarding and ice skating, but not skiing How many people enjoy snowboarding or skiing, but not ice skating? 268 How many people enjoy none of these activities? 25 0 How many people enjoy at least 2 activities? 110
The principal at Tahoe Elementary School randomly selected three of the school's twelve classes of students to participate in an option poll. All of the children in each of the three randomly selected classes were asked the question, "What is your favorite fruit to eat?". The following results were obtained. Apples, Grapes, Apple, Apple, Banana, Apple, Apple, Grapes, Orange, Apple, Apple, Banana, Strawberries, Apple, Apple, Grapes, Apple, Orange, Apple, Apple, Apple, Apple, Grapes, Grapes, Apple, Orange, Apple, Apple, Banana, Apple, Apple, Apple, Strawberries, Apple, Orange, Grapes, Grapes, Apple, Grapes, Grapes, Grapes, Banana, Grapes, Banana, Apple, Banana, Grapes, Apple, Banana, Strawberries, Banana, Apple, Orange, Grapes, Orange, Grapes, Apple, Orange. Use the results of this opinion poll to estimate, with 95% confidence, the actual percentage of children attending Tahoe Elementary School whose favorite fruit to eat is Grapes. Express the estimate both symbolically and verbally.
Are “State” and “Preference” independent? Regular Chips Reduced Fat Chips Total California 70 30 100 Colorado 30 70 100 Total 100 100 200 Use the intuitive approach to discern yes or no as to whether state and chip preference are independent. Justify your answer with a brief one or two sentence explanation.
Consider quasi-one-dimensional isentropic flow of a perfect gas through a variable area channel. The relationship between the March number M and the flow area A, derived by Zucrow and Hoffman (1976) is given by: 1 A* Mly +1 (r+1)/2(y-1) M² 2 A 2 %3D Where A* is the choking area (i.e. the area where M-1) and y is the specific heat ratio of the flowing gas. For each value of ɛ, two values of M exist, one less than 1 (i.e. subsonic flow) and one exceeding 1 (i.e. supersonic flow). Calculate both values of M for e=10.0 and y=1.4 by Newton_Raphson method. For the supersonic root, take Mo=5.0. For the subsonic root, take Mo=0.2.
When taking a 19 question multiple choice test, where each question has 3 possible answers, it would be unusual to get_______ or more questions correct by guessing alone. Note: Of course it would be unusual to get 19 questions correct. You need to enter the smallest possible number of questions to make getting "that many correct" unusual.Give your answer in the box above as a whole number.
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When taking a 6 question multiple choice test, where each question has 5 possible answers, it would be unusual to get ____ or more questions correct by guessing alone.Give your answer in the box above as a whole number.
A student is taking a multiple-choice exam in which each question has four choices A, B, C, and D. Assume that the student has no knowledge of the correct answers to any of the questions. She has decided on a strategy in which she will place four balls (marked A, B, C, and D) into a box. She randomly selects one ball for each question and replaces the ball in the box. The marking on the ball will determine her answer to the question. There are 15 multiple-choice questions on the exam. What is the probability that she will get all 15 questions correct? at least 10 questions correct? no questions correct? no more than 5 questions correct?
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We survey 200 students, and ask each whether they like donuts, pizza, and/or tacos. Every student liked at least one of them. - 100 students liked donuts - 80 students liked pizza - 100 students liked tacos - 10 students liked all three options How many students liked exactly two of the options? Type your answer.

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