(vi) A coffee shop conducted a survey, which determined that of all customers: 70% puts sugar intheir coffee, 35% adds milk, and 25% use both. Suppose a customer is selected at random. Theprobability that this customer uses exactly one of these two items is

Let , A=customers put sugar in their coffee B=customers add milk in their…

Answered: (vi) A coffee shop conducted a survey,…

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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A vaccine has a 90% probability of being effective in preventing a certain disease. The probability of getting the disease if a person is not vaccinated is 50%. In a certain geographic region, 25% of the people get vaccinated. If a person is selected at random, what is the probability that he or she will contract the disease?
..............
In a survey of consumers aged 12 and older, respondents were asked how many cell phones were in use by the household. (No two respondents were from the same household.) Among the respondents, 211answered "none,"289 said "one," 373 said "two," 143 said "three," and 138 responded with four or more. A survey respondent is selected at random. Find the probability that his/her household has four or more cell phones in use. Is it unlikely for a household to have four or more cell phones in use? Consider an event to be unlikely if its probability is less than or equal to 0.05.
In a survey of consumers aged 12 and older, respondents were asked how many cell phones were in use by the household. (No two respondents were from the same household) Among the respondents, 208 answered "none", 285 said "one", 358 said "two", 149 said "three", and 129 responded with four or more. A survey respondent is selected at random. Find the Probability that his/her household has four or more cell phones in use. Is it likely for a household to have four or more cell phones in use? Consider and event to be unlikely if its probability is less than or equal to 0.05.
According to a study, 81% of K-12 schools or districts in a country use digital content such as ebooks, audio books, and digital textbooks. Of these 81%, 6 out of 10 use digital content as part of their curriculum. Find the probability that a randomly selected school or district uses digital content and uses it as part of their curriculum. The probability that a randomly selected school or district uses digital content and uses it as part of their curriculum is (Round to three decimal places as needed.)
According to recent passport data, the percentage of people in a particular country who have a passport has risen dramatically. In 2007, only 30% of the country's citizens had a passport; in 2017 that percentage had risen to 45%. Assume that currently 45% of the citizens have a passport. Suppose 45 citizens of the country are selected at random. ... a. Find the probability that fewer than 18 have a passport. The probability that fewer than 18 have a passport is (Type an integer or decimal. Round to three decimal places as needed.)
In a particular university, 46% of female undergraduates take on debt. If you are asked to Find the probability that none of the female undergraduates have taken on debt if 10 female undergraduate students were selected at random., what probability should you be finding? Select from below: Group of answer choices P(0 female undergraduates take on debt) P(10 female undergraduates take on debt) P(1 female undergraduate takes on debt) P(2 female undergraduates take on debt)
In a city, 55 percent of the population is in favor of constructing a new shopping center. If a random sample of 400 people is selected, find the probability that (a) at least 200 support the construction of the new shopping center; (b) people between 250 and 350 support the construction of the new shopping center; (c) at most 225 support the construction of the new shopping center.
The athletic department of a school has 13 full-time coaches, and 4 of them are female. The director selects two coaches at random from this group. The probability (to three decimal places) that neither of them is a female is:
According to a study, 88% of K-12 schools or districts in a country use digital content such as ebooks, audio books, and digital textbooks. Of these 88%, 10 out of 20 use digital content as part of their curriculum. Find the probability that a randomly selected school or district uses digital content and uses it as part of their curriculum. The probability that a randomly selected school or district uses digital content and uses it as part of their curriculum is (Round to three decimal places as needed.)
A survey was done in regards to what type of animals are preferred as pets. Each respondent selected their top choice of animal for a pet. Respondents selected from: dog, cat, farret, fish, and bird. After the survey was completed, 41% picked dog, 34% picked cat, 4% picked farret, 8% picked fish, and 13% picked bird. Suppose three respondents were chosen at random. What is the probability that AT LEAST ONE of them picked dog? Round the answer to 3 decimal places.
A survey from Teenage Research Unlimited found that 40% of teenage consumers receive theirspending money from part-time jobs. If 5 teenagers are selected at random:a. Find the probability that at least 3 of them will have part-time jobs.b. Find the probability that no more than 4 will have part-time jobs.c. Find the probability that less than 5 but greater than 3 will have part-time jobs.

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(vi) A coffee shop conducted a survey, which determined that of all customers: 70% puts sugar in their coffee, 35% adds milk, and 25% use both. Suppose a customer is selected at random. The probability that this customer uses exactly one of these two items is