Probability = Freq of particular event / Tota freq
therefore P($ or more phones) = 65 / 1075
Phone | Freq | Probability |
None | 211 | 0.1963 |
1 | 286 | 0.2660 |
2 | 369 | 0.3433 |
3 | 144 | 0.1340 |
>=4 | 65 | 0.0605 |
Total | 1075 | 1 |
P(4 or more phones) = 0.0605
= 0.061
Since p > 0.05
It is more than the unusual rate so it usual that is likely.(not unlikely)
Therefore no, it not unlikely since it is more than 0.05
Option D
ma survey of consumers aged 12 and older, respondents were asked how many cell phones were...
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, 207 answered "none," 294 said "one," 358 said "two,"150 said "three," and 56 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...
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, 212 answered "none," 288 said "one," 371 said "two," 148 said "three," and 82 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...
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, 205 answered "none," 289 said "one," 366 said "two," 134 said "three," and 45 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...
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, 201201 answered "none," 281281 said "one," 359359 said "two," 142142 said "three," and 128128 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...
14. In a survey, 161 respondents say that they never use a credit card, 1220 say that they use it sometimes, and 2828 say that they use it frequently. What is the probability that a randomly selected person uses a credit card frequently? Is it unlikely for someone to use a credit card frequently? How are all of these results affected by the fact that the responses were obtained by those who decided to respond to a survey posted on...
E Qu Respondents to a survey were asked if they believed in heaven and hell. The data from the survey is given in the accompanying table. Use the provided data to answer the following questions. a. What are the percentages for the four possible outcomes conceming heaven? b. What are the percentages for the four possible outcomes concerning hell? Is the percentage of "yes, probably" responses higher for belief in heaven or hel1? EEB Click the icon to view the...
13.The data in the following table summarize results from 157 pedestrian deaths that were caused by accidents. If three different deaths are randomly selected without replacement, find the probability that they all involved intoxicated drivers. _ Pedestrian_Intoxicated Pedestrian_Not_Intoxicated Driver_Intoxicated 4 20 Driver_Not_Intoxicated 10 123 The probability is____ (Round to six decimal places as needed.) Is such an event unlikely no, because its probability is greater than 0.05 Yes, because its probability is greater than 0.05 no, because its probability is...
13. A TV show, Lindsay and Tobias, recently had a share of 15, meaning that among the TV sets in use, 15% were tuned to that show. Assume that an advertiser wants to verify that 15% share value by conducting its own survey, and a pilot survey begins with 8 households having TV sets in use at the time of a Lindsay and Tobias broadcast. Find the probability that none of the households are tuned to Lindsay and Tobias. Find...
In a national survey college students were asked, "How often do you wear a seat belt when riding in a car driven by someone else?" The response frequencies appear in the table to the right. (a) Construct a probability model for seat-belt use by a passenger. (b) Would you consider it unusual to find a college student who never wears a seat belt when riding in a car driven by someone else? Response Frequency Never 126 Rarely 346 Sometimes 535...
In February, the Pew Internet & American life project conducted a survey that included several questions about how Internet users feel about search engines and other websites collecting information about them and using this information either to shape search results or target advertising to them. In one question, participants were asked, "If a search engine kept track of what you search for, and then used that information to personalize your future search results, how would you feel about that?" Respondents...