The following table compares the hand dominance of 200 Canadian high-school students and what methods theyprefer using to communicate with their friends.Cell phone/TextIn-personOnlineTotalLeft-handed12139.34Right-handed4372166Total558560200Suppose one student is chosen randomly from this group of 200.Use Scenario 5-11. What is the probability that the student chosen prefers to communicate online?O 0.176O 0.521O 0.3O 0.8551

Given that contingency table Now using this table find required probability

Answered: The following table compares the hand…

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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A researcher collected data on adult alcohol consumption and marital status. She reported the number of adults in each category. 1- 60 drinks More than 60 drinks O drinks per month Total per month per month Single 20 100 30 150 Married 100 400 150 650 Widowed 10 25 15 50 Divorced 20 80 50 150 Total 150 605 245 1000 An adult is randomly selected from the study. Use this information to find the probabilities requested. Find the following probabilities as fractions. Don't simplify your results. a) What is the probability that a person drinks 1 - 60 drinks per month given that they are divorced? b) What is the probability that a person is divorced given that they drink 1 - 60 drinks per month? c) What is the probability that a person is single given that they have more than 60 drinks per month? d) What is the probability that a person has more than 60 drinks per month given that they are a widow?
The table shows the preferences of 40 students surveyed about the design of a new t-shirt for students who are graduating this year. Sleeves short sleeves long sleeves pink 12 5 black 14 9 What is the probability that a student surveyed, selected at random, preferred a pink t-shirt with long sleeves?
The table lists the drinking habits of a group of college students. If a student is chosen at random, find the probability of getting someone who is women or a heavy drinker. Sex Non-Drinker Regular drinker Heavy Drinker Total Man 135 55 5 195 Woman 187 21 7 215 Total 322 76 12 410 Group of answer choices 0.932 0.151 0.537 0.815
The following table describes the smoking habits of a group of asthma sufferers Nonsmoker (NS) Smoker (S) Men (M) 275 50 Women (W) 147 30 If one of the peopleis randomly selected, what is the probability the subject is a smoker or a woman?
In a class of students, the following data table summarizes how many students passed a test and complete the homework due the day of the test. What is the probability that a student chosen randomly from the class did not complete the homework? Passed the test Failed the test Completed the homework 11 7 Did not complete the homework Answer: Submit Answer attempt 4 out of 4 problem 1 out of max 1
In a class of students, the following data table summarizes how many students have a cat or a dog. What is the probability that a student chosen randomly from the class does not have a cat or a dog? Has a dog Does not have a dog Has a cat 9 6 Does not have a cat 2 11
. Assume that 75 percent of the students at the university have taken 4 years of high school math. Of those with four years of high school math, 80 percent plan to major in science. Of those without 4 years, only 10 percent plan to major in science. You stop a student at random. If the student plans to major in science, what is the probability that this student had four years of high school math?
Frieda made the following two-way table about the color and size of the marbles in a bag. Blue Red Clear Total Small 21 17 32 70 Large 4 13 Total 25 19 39 83 What is the probability of selecting a small or blue marble? 0.843 0.301 0.253 0.892
The following table shows the distribution of murders by type of weapon for murder cases in a particular country over the past 12 years. Complete parts (a) through (e). (b) What is the probability that a randomly selected murder resulted from a rifle or shotgun? (Type a decimal rounded to three decimal places as needed.) P(rifle or shotgun) = Interpret this probability. Select the correct choice below and fill in the answer box to complete your choice. OA. If 1000 murders were randomly selected, exactly of them would have resulted from a rifle or shotgun. B. If 1000 murders were randomly selected, we would expect about of the to have resulted from a rifle or shoto (c) What is the probability that a randomly selected murder resulted from a handgun, rifle, or shotgun? P(handgun, rifle, or shotgun) = (Type a decimal rounded to three decimal places as needed.) Interpret this probability. Select the correct choice below and fill in the answer box to complete your choice. OA. If 1000 murders…
A researcher wanted to study the commuting habits of community college students and faculty. He wanted to compare their mode of transportation to the college. He asked if they walk, bike, or drive to campus. The following table represents the data that was collected. Walks to campus Bikes to campus Drives to campus Total Students 70 22 78 170 Faculty 5 4 23 32 Total 75 26 101 202 A. Find the probability that a randomly selected member of faculty walks to campus. B. If you are randomly selecting a person from those who bike to campus, what is the probability that you will select a student. C. Perform a Test of Independence to determine if commuting habits are dependent on being a student or a faculty.
In a class of students, the following data table summarizes how many students have a cat or a dog. What is the probability that a student chosen randomly from the class has a cat and a dog? Has a dog Does not have a dog Has a cat 5 2 Does not have a cat 6 11
Mrs. Bukovac compiled the following table to compare the hand dominance of 200 Cleveland Heights High School students and what methods they prefer using to communicate with their friends. Communication method Cell phone/text In person Online 34 166 200 Total Hand Left-handed 12 13 domin ance Right-handed 43 72 51 Total 55 85 60 (a) If you choose a student at random, what is the probability they are left-handed, given that they communicate in person? (b) If you choose a student at random, are the events "left-handed" and "communicates by text" independent, based on the data above? Explain how you know.

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