On July 19, 2020, several national poll results for the presidential election were published. Two used likely voters for the November election while 2 others used registered voters (regardless of their likelihood of voting). The results for all polls are summarized below: LIKELY VOTER POLLS Poll #1: Pro-Biden - 541; Pro-Trump - 453; Undecided - 110 Poll #2: Pro-Biden - 465; Pro-Trump - 338; Undecided - 42 REGISTERED VOTER POLLS Poll #1: Pro-Biden - 363; Pro-Trump - 289; Undecided - 21 Poll #2: Pro-Biden - 363; Pro-Trump - 296; Undecided - 14 I am particularly interested in knowing whether either set of polls can be used to determine whether the American electorate appear to favor one candidate over the other on this date. Use the Sign Test to answer the following. Combine the like polls. Identify steps taken to come to your conclusion. Of likely voters polled, is there a difference between those favoring Biden over Trump?

On July 19, 2020, several national poll results for the presidential election were published. Two used likely voters for the November election while 2 others used registered voters (regardless of their likelihood of voting). The results for all polls are summarized below: LIKELY VOTER POLLS Poll #1: Pro-Biden - 541; Pro-Trump - 453; Undecided - 110 Poll #2: Pro-Biden - 465; Pro-Trump - 338; Undecided - 42 REGISTERED VOTER POLLS Poll #1: Pro-Biden - 363; Pro-Trump - 289; Undecided - 21 Poll #2: Pro-Biden - 363; Pro-Trump - 296; Undecided - 14 I am particularly interested in knowing whether either set of polls can be used to determine whether the American electorate appear to favor one candidate over the other on this date. Use the Sign Test to answer the following. Combine the like polls. Identify steps taken to come to your conclusion. Of likely voters polled, is there a difference between those favoring Biden over Trump?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 6E

See similar textbooks

Similar questions

A famous news and media company has tracked the latest polling in eight swing states in the US that could potentially decide the 2020 election between the two presidential candidates, Donald Trump and Joe Biden. Let's assume that Bid en needs more than half of the voters to support him in order to win the elections. During his presidential campaign in Pennsylvania, Biden announced that he would win Pennsylvania as 632 out of a sample of 1246 male voters support him according to the polling in Pennsylvania. a) Test if Biden will win the election in Pennsylvania. Use the p-value approach at the 5% level of significance. b) If you advise the Bid en campaign team of your results from the test above, what is the implication of a Type I Error on the Biden campaign strategy? Include the definition and the in contextinterpretation of a Type I Error. c) Comment on the method of choosing this sample. Provide one reason to explain your comment.
A teachers looks over her class and notices a few trends. Out of the 60 students in the class, 23have brown hair, seven have green eyes, and three have both brown hair and green eyes. What is theprobability that a randomly selected student has either brown hair or green eyes?
A survey showed that 37% of human resource professionals are at companies that rejected job candidates because of information found on their social media. If 25 human resource professionals are randomly selected, would 14 be a significantly high number to be at companies that rejected job candidates because of information found on their social media? Why or why not?
Company A has recently conducted aggressive advertising campaigns to maintain and possible increase its share of the market for fabric softener.Its main competitor, company B, has 39%of the market, and a few other competitors account for the remaining 19%.To determine whether the market shares changed after the advertising campaign, the marketing manager for company A solicited the preferences of a random sample 220 customers of fabric softener.Of the 220 customers, 99 indicated a preference for company A's product, 80 preferred company B's product, and the remaining 41 preferred the products of one of the other competitors.Can the analyst infer at 4% significance level that customer preferences have changed from their levels before the advertising campaigns were launched?
A researcher randomly selected 500 patients in a doctors office and found that 90% of these patients had health insurance. The results of this study, if applied to all residents, are questionable because of: a) selection bias b) response bias c) lack of accuracy d) nonreponse bias
The manager of a library that is open to residents of two towns, Royal Center and Winamac, wants to know if the proportion of households from Royal Center that use the library is smaller than the proportion of households from Winamac. In order to test this, the library manager asks 45 households in Royal Center and 49 households in Winamac whether anyone in their household had used the library last summer. 23 of the households surveyed in Royal Center responded "yes", and 35 of the households in Winamac responded "yes". Find the p-value that would be used to make a conclusion for this hypothesis test.
. People in a city are going to vote for one of the three candidates A, B, and C in the next election. In a random sample of 100 people from this city 35 voted for A, 28 voted for B, and the rest voted for C. Perform a significance test and indicate if there is any preferences in the next election for these candidates.
During the 2004 election year, new polling results were reported daily. In anIBD/TIPP poll of 910 adults, 503 respondents reported that they were optimistic aboutthe national outlook, and President Bush’s leadership index jumped 4.7 points to 55.3(Investor’s Business Daily, January 14, 2004). What is the sample proportion of respondents who are optimistic about thenational outlook? A campaign manager wants to claim that this poll indicates that the majority ofadults are optimistic about the national outlook. Construct a hypothesis test sothat rejection of the null hypothesis will permit the conclusion that the proportionoptimistic is greater than 50%. Use the polling data to compute the p-value for the hypothesis test in part (b).Explain to the manager what this p-value means about the level of significance ofthe results.
Recently, the number of airline companies that offer in-flight Wi-Fi service to passengers has increased. However, it is estimated that only 10% of the passengers who have Wi-Fi available to them are willing to pay for it. Suppose Gogo, the largest provider of airline Wi-Fi service, would like to test this hypothesis by randomly sampling 125 passengers and asking them if they would be willing to pay $4.95 for 90 minutes of onboard Internet access. Twenty passengers indicated they would. Using α = 0.05, anwer the following questions: a. Based on this sample, can we conclude that the proportion of airline passengers willing to pay for onboard Wi-Fi service is different than 10%? b. Determine the p-value for this test.
A random sample of 600 voters in Centreville indicated that 90 of them believed their congressional representative was honest and trustworthy. Identify the population and sample in the study
In an online poll run by a Hong Kong newspaper, 45% of people declared they go to the gym once a week, 25% go two times, 10% go three times, and the rest do not go. The data were collected through telephone interviews with 650 people; 230 answered they do not go to a gym at all, 150 go once a week, 200 go twice a week, and the rest go three times each week.a. Can this be considered to be a multinomial experiment? Which characteristics must it have to be classified as such?b. Would you use a goodness of fit test? Why?c. What conclusions would you gather from it? Do the online results match the phone interviews?d. If not, could you suggest any reasons why they are different?
A researcher published this survey result: "74% of people would be willing to spend 10 percent more for energy from a non-polluting source". The survey question was announced on a national radio show and 1200 listeners responded by calling in. Determine whether the study involves selection bias, participation bias, both selection bias and participation bias, or neither. Also describe how the bias would affect the results.