Suppose you draw randomly from the students who answered this survey: 1.Draw two students with replacement. What is the chance that all are Marian voters? 2.What is the chance of getting a female studen

Suppose you draw randomly from the students who answered this survey: 1.Draw two students with replacement. What is the chance that all are Marian voters? 2.What is the chance of getting a female studen

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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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.
What is the chance that a randomly selected student is either for Marion or Undecided? Blank 1 What is the chance that a randomly selected student is either for Marion or female? Blank 2 What is the chance of getting a female student if you draw only from the Marion’s voters? Blank 3 Draw two students with replacement. What is the chance that all are Marian voters? Blank 4 Round off your answer to four decimal places
The table below shows the results of a survey that asked 1044 adults from a certain country if they favored or opposed a tax to fund education. A person is selected at random. Complete parts (a) through (c). Support Oppose Unsure Total Males 151 319 13 483 Females 237 305 19 561 Total 388 624 32 1044
If you make random guesses for 20 multiple choice test questions each with four possible answers, what is the probability of a) Getting at least one correct b) Getting all answers wrong
answer the questions in the picture please.
Need only handwritten solution only (not typed one).
Consider the following table and answer the questions. Write your answers as fractions. Major Biology Business Engineering Mathematics Computer science Female 34 40 40 31 28 Male 41 36 34 25 38 a. What is the probability that a randomly selected person is a female? b. What is the probability that a randomly selected person is a male whose major is Mathematics? c. If a woman is randomly selected what is the probability that she is studying business? d. If a group of 6 students is selected at random what is the probability that it has 4 females and 2 males?
3. In a multiple-choice test, each question has 4 options, and a student randomly guesses the answers. If there are 10 questions, what is the probability that the student gets exactly 5 correct answers?
e E Knowledge Check www-awu.aleks.com More than one teacher has given the following advice: choose answer C when blindly guessing among four answers in a multiple choice test, ? since C is more often the correct answer than either A, B, or D. Suppose that we take a random sample of $40 correct answers from multiple-choice tests for introductory college courses and obtain the information summarized by the first row of numbers in the table below. These numbers are the observed frequencies for the categories A, B, C, and D for our sample of 540 correct answers. The second row of numbers contains the frequencies expected for a sample of 540 correct answers if a correct answer is equally likely to be A, B, C, or D. The bottom row of numbers contains the following value for each of the correct answer categories A, B, C, and D. (fo-fx) (Observed frequency-Expected frequency) SE Expected frequency Send data to Excel) Observed frequency fo Part 1 Fill in the missing values in the table. Round…
QUESTION 1 A multiple-choice test involves 20 questions, with four choices for each answer. a. If you guessed the answers to all questions at random, what mark out of 20 would you expect to get? b. If you know the correct answer to eight of the questions, what is your expected score out of 20?
A state official wants to know which party the voters in his state feel is best qualified to lead the country over the next 10 years. He mails a questionnaire on this subject to an SRS of 1600 voters in his state. His staff reports that 325 questionnaires have been returned, of these 241 respondents feel the Democratic Party is best qualified to lead the country over the next 10 years. Question: Please tell us: a) Population b) Sample