11. s) A researcher studied the relationship between coffee drinking and heart attacks in youngwomen. The researcher took a random sample of 345 young women and the table below summarizes theresults.Heart attackCoffee drinkerNoYesTotalLightНeavy17288260454085Total217128345(A)Find the probability that a randomly selected woman is a heavy coffee drinker and had a heart attack (circleexactly one answer).404045128(i)(iv)85(v)34534585128B) Find the probability that a randomly selected woman had a heart attack given that she is a heavy coffeedrinker (circle exactly one answer).45128(v)404040(ii)(ii)85(iv)853453451285

Find ( A ) P ( heavy and heart attack ) =? ( B ) p ( heart attack / heavy ) =?

Answered: ..s) A researcher studied the…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Organ Donors USA Today provided information about a survey of 5100 adult Internet users. Of the respondents, 2346 said they are willing to donate organs after death. In this survey conducted for Donate Life America, 100 adults were surveyed in each state and the District of Columbia, and results were weighted to account for the different state population sizes. a. What percentage of respondents said that they are willing to donate organs after death? b. Based on the poll results, what is the probability of randomly selecting an adult who is willing to donate organs after death? c. What term is used to describe the sampling method of randomly selecting 100 adults from each state and the District of Columbia?
The table below shows the results of a survey that asked 1034 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 156 315 9 480 Females 236 290 28 554 Total 392 605 37 1034 (a) Find the probability that the person opposed the tax or is female. P(opposed the tax or is female)=?? (Round to the nearest thousandth as needed.) (b) Find the probability that the person supports the tax or is male. (c) Find the probability that the person is not unsure or is a female.
The manager of a used car lot took inventory of the automobiles on his lot and constructed the following table based on the age of his car and its make (foreign or domestic): If a car were randomly selected from the lot, what is the probability that it is either a foreign car or less than 3 years old? Select one: A. 144/200 B. 45/200 C. 89/200 D. 100/200
A sampling of children was asked if they would they prefer a lion or elephant as their favorite animal. The results of the survey are below: Lion Elephant Total Boys 90 110 200 Girls 75 85 160 Total 165 195 360 If one child who was in the survey is selected at random, find the probability that: A randomly selected child is a Boy A randomly selected Girl prefers Elephants. A randomly selected child that prefers Lions is a Boy A randomly selected child prefers Elephants?
Given the new fad of health consciousness, a random sample of 400 college students was asked what their preferred type of drink was and whether they took regular or sugar free. The following table gives a two-way classification of the responses. Regular Sugar free TOTALS Juice 210 95 305 Iced Coffee 75 20 95 TOTALS 285 115 400 (a) If one student is selected at random from these 400 students, find the probability that this student (i) Prefers sugar free drinks (ii) Prefers juice (iii) Prefers regular juice (iv) Prefers juice given that it is a sugar free drink. (v) Prefers iced coffee or that drinks must be sugar free. (b) Are the events 'prefers juice' and 'prefers sugar free drinks' independent? Use probabilities to state your answer.
A university recently surveyed 500 students to determine which new fitness area to offer in its recreation facility. The results of the survey are summarized in the following table. Preferred Fitness Area Spinning Room Climbing Wall Ellipticals Year 1-2 37 81 20 Class Level Year 3-4 71 86 47 Graduate Student 81 55 22 What is the probability that a randomly selected student is interested in a spinning room given that they are a graduate student?
The table below shows the results of a survey that asked the involvement of a person in a charity work. The person’s gender and response were recorded. Find the probability of selecting a female who never volunteers a.0.29 b.0.57 c.0.51 d.0,49
The manager of an ice cream shop decides to track the purchases of ice cream throughout the day. The data is displayed on the two-way frequency table shown. Vanilla Chocolate Total Adult 52 41 93 Child 26 105 131 Total 78 146 224 Part A: What is the probability of a customer ordering vanilla ice cream given they are an adult, or P(vanilla | adult)? Round to the nearest hundredth. [ Select] Part B: What is P(child | chocolate)? [ Select] Part C: What must be true to make the events of "the customer being a child" and "ordering chocolate ice cream" independent? [ Select ]
A stem-and-leaf plot for the number of touchdowns scored by all Division 1A football teams is shown below. Complete parts (a) through (c). 1345788 2012 23457889 3001112233445577789 40012234555567889 Key: 115 = 15 50 235578 61 367 7 87 (a) If a team is selected at random, find the probability the team scored at least 32 touchdowns. 0.651 (Round to three decimal places as needed.) (b) If a team is selected at random, find the probability the team scored between 40 and 49 touchdowns inclusive. 0.254 (Round to three decimal places as needed.) (c) If a team is selected at random, find the probability the team scored more than 70 touchdowns. 0.016 (Round to three decimal places as needed.) Are any of these events unusual? Select all the unusual events below. A. Scoring between 40 and 49 touchdowns inclusive is unusual. B. Scoring more than 70 touchdowns is unusual. C. Scoring at least 32 touchdowns is unusual. D. None of the events are unusual.
A poll asked people with and without children under 18 years old if they frequently experienced stress. The results are shown in the accompanying table. Complete parts (a) through (c) below. Frequently Experience Stress Yes No Total With child under 296 234 530 18 уears No child under 196 314 510 18 years Total 492 548 1040 a. Find the probability that a randomly chosen person from this group said "Yes," given that the person has a child under 18 years old. (Type an integer or decimal rounded to four decimal places as needed.) b. Find the probability that a randomly chosen person from this group said "Yes," given that the person does not have a child under 18 years old. (Type an integer or decimal rounded to four decimal places as needed.) c. Find the probability that a randomly chosen person from this group said "Yes" or had a child under 18 years old. (Type an integer or decimal rounded to four decimal places as needed.)
The following table gives data on the marital status of women aged 25 to 29. These proportions tell us the probability of the marital status of a randomly selected woman. Marital Status Never Married Married Widowed Divorced Proportion ??? 0.494 0.005 0.046 1) What percentage of women aged 25 to 29 have never been married? 2) What is the probability that a randomly chosen woman is not currently married?

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