A telephone survey conducted by the Maritz Marketing Research company found that 43% of Americans expect to save more money next year than they saved last year. Forty-five percent of those surveyed plan to reduce debt next year. Of those who expect to save more money next year, 81% plan to reduce debt next year. An American is selectedrandomly.a. What is the probability that this person expects to save more money next year and plans to reduce debt next year?b. What is the probability that this person expects to save more money next year or plans to reduce debt next year?c. What is the probability that this person expects to save more money next year and does not plan to reduce debt next year?d. What is the probability that this person does not expect to save more money given that he/she does plan to reduce debt next year?(Round your answers to 4 decimal places, e.g., 0.2156.)a.b.d.Po (response not displayed)Po (response not displayed)Po (response not displayed)(response not displayed) Use the values in the cross-tabulation table to solve the equations given.ABCDEF51198+a.P (AUD)b. P (EUB)=(Round your answers to 4 decimal places, e.g. 0.2156.)c. P (DUE) =11d. P (CUF)=45(response not displayed)B (response not displayed)Eo (response not displayed)Po (response not displayed)

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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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We are interested in analyzing data related to college football. Use S to denote the team is in the SEC and use W to denote a team has a winning season. The probability that a team is in the SEC in the data set is 5.5%. The probability that a team has a winning season is 52.5%. The probability that a team is in the SEC and has a winning season is 3.55%. What percentage of teams are in the SEC or had a winning season? b. What percentage of people teams are in the SEC and did NOT have a winning season? Given a team had a winning season, what is the probability that they are in the SEC? а. с.
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 WKU Herald reported that many students are unhappy with the cancellation of Spring Break. A sample of of 66 WKU students' opinion on the cancellation of Spring Break was collected. If 12% of all young people feel that WKU should have cancelled Spring Break, what is the probability that the proportion of those in the sample who feel that WKU should have cancelled Spring Break will be less than.1768? O a. 9222 O b. .4222 C. .0568 O d. .0778
Alex surveyed some students at his school, asking about their favorite sport and whether they have a pet. What is the probability that a student in this survey has pets? Has Pets No Pets Total O 0.063 Basketball 16 12 28 O 0.110 Football 90 72 162 O 0.433 Baseball 38 26 64 O 0.567 Total 144 110 254 O 0.642
About 8% of males are colorblind. A researcher needs colorblind subjects for an experiment and begins checking potential subjects. a. On average, how many men should the researcher expect to check before finding one who is colorblind? b. What's the probability that she won't find anyone who is colorblind among the first 4 men she asks? c. What's the probability that the first colorblind man found will be the 6" man checked? d. What's the probability that she finds someone who is colorblind before checking the 7th man?
The table below displays the results of a survey of 72 people in an office building on whether or not they favor a smoking ban in the cafeteria. Smoking Ban? Gender Favor Oppose No Opinion Female 28 1 Male 25 6 3 Given that a person is Female, what is the probability they Oppose the smoking ban? Round to the nearest whole percentage. 18% 58% 24% 74%
A sample of residents of Santa Monica were asked two questions, whether they had taken a course at Santa Monica College and what type of job they had or hoped to have. Their responses are summarized in the two-way data table below. Tech Industry Health Care Job Business/Finance Other Job Job Category Has taken a 53 104 93 class at SMC 69 Has not taken a class at SMC 82 28 38 151 Use the table to answer the following questions, a. What is the probability that a randomly chosen person has not taken a class at SMC and answered health care job. [Select] b. What is the probability that a randomly chosen person has taken a class at SMC or answered Tech Industry Job? I Select c. Would it be unusual for a person to have not taken a class at SMC and answered health care job? Why or why not? ( Select]
A recent survey by a market research company found that 56% of all US households have internet access. Answer the following as decimals rounded to three places. a. If five households are chosen at random, what is the probability that all five have internet access? Preview b. What is the probability that none of the five have internet access? Preview c. If five households are chosen, what is the probability that at least one household has internet access? Preview
a. Assuming that the rate of 23.9% is correct, find the probability that 398 or more of the 1482 adults have sleepwalked. b. Is that result of 398 or more significantly high? c. What does the result suggest about the rate of 23.9%?
55% of all violent felons in the prison system are repeat offenders. If 38 violent felons are randomly selected, find the probability that a. Exactly 22 of them are repeat offenders. b. At most 20 of them are repeat offenders. c. At least 20 of them are repeat offenders. d. Between 18 and 23 (including 18 and 23) of them are repeat offenders.

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