According to CTIA, 41% of all U.S households are wireless-only households (no landline). In arandom sample of 20 households, what is the probability that-a) Exactly 5 are wireless-onlyb) Fewer than 3 are wireless-onlyc) At least 3 are wireless-onlyd) The number of households that are wireless-only is between 5 and 7, inclusive?

It is given that:Sample size: Probability that the U.S. households are wireless-only household only:

Answered: According to CTIA, 41% of all U.S…

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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2)
Assume 35% of dogs are adopted from a shelter. In a random sample of 500 dogs, what is the probability that more than 36% of these dogs will be adopted? A)0.0176 B)0.3192 C)0.200 D)0.6808
Approximately 3% of women aged 45 - 60 have breast cancer. A woman with breast cancer has a 97% chance of a positive test from a mammogram, while a woman without breast cancer has a 22% chance of a positive result. a) What is the probability that a woman does not have breast cancer and tests positive? b) What is the probability of a randomly selected woman having a positive test result? c) If a woman gets a negative test result, what is the probability that she does not have breast cancer? **Note: Answer in exact fraction, or rounded to at least 4 decimal places.
A) Calculate the probability that exactly 6 out of 10 randomly sampled 18- 20 year olds consumed an alcoholic drink. B) What is the probability that exactly four out of the ten 18-20 year olds have not consumed an alcoholic beverage? C) What is the probability that at most 2 out of 5 randomly sampled 18-20 year olds have consumed alcoholic beverages?
15 400 people were questioned as to whether they read novels in paperback form or on an e-reader. 20% said they do both. 30% said they read paperbacks. The probability that a person who didn't read paperbacks also didn't read on an e-reader was 25% a) Represent this information in the two-way table below Total Total b) Calculate the probability that a randomly selected person reads novels on an e-reader but not in paperback. c) Of those that read on e-readers, what percentage read in both formats? Give your answer correct to the nearest percent.
In a survey of 205 people, the following data were obtained relating gender to color-blindness: Color-Blind (C) Not Color - Blind C¯¯¯¯C¯ Total Male (M) 71 62 133 Female (F) 20 52 72 Total 91 114 205 A person is randomly selected. What is the probability that the person is:a) Male? b) Male and Color-blind? c) Male given that the person is Color-blind? d) Color-blind given that the person is Male? e) Female given that the person is not Color-blind? f) Are the events Male and Color blind independent? Enter yes or no.
According to government data, 73% of employed women have never been married. Rounding to 4 decimal places, if 15 employed women are randomly selected: a. What is the probability that exactly 2 of them have never been married? b. That at most 2 of them have never been married? c. That at least 13 of them have been married?
2) A company was examining the perception of sports fans in a specific region and outside of that region to see if people viewed a specific team favorable or unfavorable. It was previously determined that given a person was from the region the probability they considered the team favorable was 0.7, and given that the person was not from the region, the probability they considered the team unfavorable was 0.28. Consider a collection of 35 people were surveyed, where 28 were from the region, and 7 people were from outside the region. a) Given that a randomly selected response from the sample was favorable, what is the probability they were from the region? b) Given that a randomly selected response from the sample was not favorable, what is the probability they were from the region?
According to reports, 30% of American adults have chronic insomnia. If 3 American adults are chosen at random, what is the probability that all 3 have chronic insomnia? A) 0.90 B) 0.027 C) 0.093 D) 0.075 E) 0.8437
15. Based on data from a USA Today Snapshot, 72% of adults have accurity concerns about online banking, Suppose 30 adults are randomly selected d) Find the probability that fewer than 10 of the adults have security concerns about online banking. e) Find the probability that between 5 and 10 (inclusive) of the adults have security concerns about online banking.
It is believed that 67.3% of Americans own their own homes. Suppose a sample of 50 Americans were selected. c) Find the probability that the sample selected has more than 70% of the Americans that are homewoners.
b. In a survey of 99 families in Karachi, 45 were low income families who at some point in time were involved in electricity theft. 13 were low income families who never did any violation. 16 were high income families who involved in electricity theft, and 25 high income families never did any violation. If One of these subject is randomly selected, what is the probability of: i. Low income families or someone who did electricity theft. ii. Low income families or someone who did not do violation. iii. High income families or someone who did electricity theft.

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