Suppose we want to test the claim that the majority of adults are in favor of raising the voting age to 21. is the hypothesis test left-tallied, right-tallied, or two-tallied?
Q: 1a) A claim has been made that only 5% of men in the U.S. play golf. As an avid golfer, I do not…
A: 1) A claim has been made that only 5% of men in the U.S. play golf.Confidence level = 90%Statistical…
Q: A survey asked 1578 US residents: "Do you think the use of marijuana should be made legal, or not?".…
A: Given that total sample size (n) = 1578 Proportion of respondents who think that marijuana should be…
Q: 8) A researcher wanted to determine whether there is any difference in the popularity of football…
A: a) A null hypothesis is a statement of no difference and the alternative hypothesis is simply the…
Q: The city of Raleigh has 6800 registered voters. There are two candidates for city council in an…
A: Given : telephone poll of 500 randomly selected registered voters was conducted. 208 said they'd…
Q: 6. A hypothesis test is designed to test the claim that that less than 12 per cent of people in…
A:
Q: It is estimated that 3% of adults age 18 to 29 who have high blood pressure. You wish to test this…
A: We assign Null Hypothesis (H0) and Alternative Hypothesis (H1) The test statistic,…
Q: A statistics instructor believes fewer than 20% of Clayton State University students attended the…
A: The random variable is attending the midnight showing.We have to write the null and alternative…
Q: It is believed that at least 60% of the residents in a certain area favor an annexation suit by a…
A: It is believed that at least 60% of the residents in a certain area favor an annexation suit by a…
Q: A political scientist surveys 74 of the current 205 representatives in a state's congress. Of them,…
A: A Population is the entire group that you want to draw conclusions about. A sample is the specific…
Q: Your local school board wants to determine the proportion of people who plan on voting for the…
A: Note:- As per our policy, we can answer only three subparts of a question. Please make a new request…
Q: Nationally, 60% of American own American cars, 26% of Americans own Asian cars, and the remaing…
A: Consider that pi’s are the proportion of the Americans own American cars, own Asian cars, and own…
Q: A researcher claims that 66% of voters favor gun control. Determine whether the hypothesis test for…
A: From the provided information, 66% of voters favor gun control that is p = 0.66
Q: The city of Raleigh has 7200 registered voters. There are two candidates for city council in an…
A: It is given that, a day before the election, a telephone poll of 200 randomly selected registered…
Q: C2. Below we present a cross-tabulation of views on restoring the voting rights of felons in prison…
A: (a) Obtain the percentage of the cross tabulation of the given data. The percentage of the cross…
Q: A polling organization uses random digit dialing of registered voters in a county to gauge the…
A: Answer: Option "D" is correct D.A chi-square test of independence
Q: The Institute of Education Sciences measures the high school dropout rate as the percentage of…
A: In 2009, high school dropout rate between 16-24 years olds was 8.1% . A pooling company took a…
Q: The shares of the U.S. automobile market held in 1990 by General Motors, Japanese manufacturers,…
A: A survey of new buyers shows the following purchase…
Q: An economist wondered if people who go to the movies on weekdays go more or less often on Fridays…
A: Given that Sample size n=50 Favorable cases x =14 Sample proportion p^=x/n =14/50 =0.28
Q: It is believed that at least 60% of the residents in a certain area favor an annexation suit by a…
A:
Q: Among college students, the proportion p who say they're interested in their congressional…
A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…
Q: selection was biased?
A: Given that Total company employees = 40 Committee should contain 7 members. None of the 18…
Q: tourists
A: Here hypothesis testing of proportion
Q: It is believed that at least 60% of the residents in a certain area favor an annexation suit by a…
A: It is given that Population proportion, p = 60% = 0.60 Sample size, n = 200 Favourable cases, X =…
Q: The city of Frederick has 9432 registered voters. There are two candidates for the city council in…
A: Solution-: The city of Frederick has 9432 registered voters. The day before the election, a…
Q: In acceptance sampling, usually 100% of the incoming lot is checked. True or False
A: Acceptance Sampling: It is concerned with decision related to acceptance of the lot. There are…
Q: A political campaign wants to estimate the number of adult residents who voted in the last city…
A: Detailed explanation:(a) We must take into account which survey sample is the most representative…
Q: Suppose in one sample hypothesis test, if the test statistic value is -1.09 and the table value is…
A: Given test statistic=-1.09, tabulated=1.96
Q: choose
A: Here it is required to state the type of study described below "A poll is conducted by a university…
Q: The National Technology Readiness Survey sponsored by the Smith School of Business at the University…
A: Denote p2009 and p2004 as the true population proportions of spam emails deleted by Americans in…
Q: A political scientist surveys 70 of the current 127 representatives in a state's congress. Of them,…
A: Given that a political scientist 70 of the current 127 representative in state's congrese. And of…
Q: A researcher claims that the percentage of voters that favor voting via absentee ballot is 35%.…
A: It is given that the researcher claims that the percentage of voters that favor voting via absentee…
Q: Isconduct (fraud, duplication, plagiarism) appear to be a major factor? Choose the correct Pareto…
A: See the handwritten solution
Q: K In a July 2017 report, a research firm stated that 39% of people from a certain region reported…
A: Approach to solving the question: Detailed explanation: Examples: Key references:
Q: Any errors in the final result due to excluding people without phones
A: Given: Survey in which people without phones always excluded from the sample Which will cause in tge…
Q: A survey asked 1578 US residents: “Do you think the use of marijuana should be made legal, or not?”.…
A: From the provided information, Sample size (n) = 1578 61% of respondents said it should be made…
Q: From December 11–15, 2019, Quinnipiac University conducted a survey of 1,390 registered voters from…
A: Identification of the population and the sample
Q: The State Bar of California is considering changing its exam structure such that instead of 200…
A: The sample sizes are 42 and 43.
Q: our place of employment is trying to determine whether to allow its employees to work from home for…
A: Note: As per the multiple questions rule, we are answering first question for you. Kindly repost the…
Q: A politician asked his constituents via a Facebook poll to help him how he should vote on a bill…
A: Solution: Given information: n= 19600 sample size p^=0.78 Sample proportion
Q: 3. Today, in a random sample of 30 people, Trump received an approval rating of 30% world- wide. On…
A:
Q: Minnesota had the highest turnout rate of any state for the 2016 presidential election.† Political…
A: (Let p1 = the population proportion of voters in rural Minnesota who voted in the 2016 election and…
Q: Support for the U.S. death penalty for convicted murderers was 63% in 2014 (Gallup poll results…
A:
Suppose we want to test the claim that the majority of adults are in favor of raising the voting age to 21. is the hypothesis test left-tallied, right-tallied, or two-tallied?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- In a study of retractions in biomedical journals, 423 were due to error, 182 were due to plagiarism, 875 were due to fraud, 331 were due to duplications of publications, and 287 had other causes. Construct a Pareto chart. Among such retractions, does misconduct (fraud, duplication, plagiarism) appear to be a major factor? Choose the correct Pareto chart below. O A. O B. С. D. Retractions Retractions 900- Retractions Retractions 900- 900- 900- 600- 600- 600- 600- 300- 300- 300- 300- 0- 0- Error 0- Fraud Error Error Plagiarism Fraud Duplication O Other Plagiarism Plagiarism O Fraud O Duplication Other Fraud Error Duplication O Other Plagiarism Duplication Other Among such retractions, does misconduct (fraud, duplication, plagiarism) appear to be a major factor? A. Yes, misconduct appears to be a major factor because the majority of retractions were not due to misconduct. B. No, misconduct does not appear to be a major factor because the majority of retractions were due to misconduct. O…Your local school board wants to determine the proportion of people who plan on voting for the school levy in the upcoming election. They conduct a random phone poll, where they contact 150 individuals and ask them whether or not they plan on voting for the levy. Of these 150 respondents, 78 people say they plan on voting for the levy. The school board wants to determine whether or not the data supports the idea that more than 50% of people plan on voting for the levy. Calculate the p-value for the one-sided Hypothesis test described in this example. (Hint: Find the test statistic and then use the tables to find the p-value.) 0.20 < p-value < 0.30 0.6879 0.3121 greater than 0.5 0.4899Exit polling is a popular technique used to determine the outcome of an election prior to results being tallied. Suppose a referendum to increase funding for education is on the ballot in a large town (voting population over 100,000). An exit poll of 200 voters finds that 106 voted for the referendum. How likely are the results of your sample if the population proportion of voters in the town in favor of the referendum is 0.49? Based on your result, comment on the dangers of using exit polling to call elections. How likely are the results of your sample if the population proportion of voters in the town in favor of the referendum is 0.49? The probability that more than 106 people voted for the referendum is 0.12890.1289. (Round to four decimal places as needed.)
- Country Magazine reports that celebrity MySpace accounts have an average of 4 million friends. Celebologist Chuck Norris thinks that it's actually different than that. Norris randomly samples 43 celebrities on MySpace and finds an average of 3 million friends. Which is the best set of hypotheses to test Chuck Norris's claim?A conservative radio talk show host with a large audience is interested in the proportion p ofadults in his listening area who think the drinking age should be lowered to eighteen. To findthis out, he poses the following question to his listeners: “Do you think that the drinking ageshould be reduced to eighteen in light of the fact that eighteen year‐olds are eligible for militaryservice?” He asks listeners to phone in and vote “Yes” if they agree the drinking age should belowered and “No” if not. Of the 100 people who phoned in, 70 answered “Yes.” a. List one source of sampling bias (i.e. bias based on the people included in the sample). b. List another source of bias (sampling or non-sampling).2. Toastmasters International cites a report by Gallup Poll that 40% of Americans fear public speaking. A student believes that less than 40% of students at her school fear public speaking. She randomly surveys 361 schoolmates and finds that 137 report they fear public speaking. Conduct a hypothesis test at the 5% level to determine if the percent at her school is less than 40%. a. State the null hypothesis. b. State the alternative hypothesis. c. Construct a 95% confidence interval for the true proportion. Sketch the graph of the situation. Label the point estimate and the lower and upper bounds of the confidence interval. (Round your answers to four decimal places.)
- Many polls are conducted over the telephone. Some polling organizations choose a sample of phone numbers to call from lists that include landline phone numbers only, and do not include cell phones. Do you think this increases the bias in phone polls? [ Select ] [ Select ] No YesWhat is the name of this hypothesis test? A state employee wishes to see if there is a significant difference in the number of employees at the interchanges of three state toll roads. Can it be concluded that there is a significant difference in the average number of employees at each interchange? Pennsylvania Turnpike: 7, 14, 32, 19, 10, 11 Greensburg Bypass: 10, 1, 1, 0, 11, 1 Beaver Valley Expressway: 1, 12,1, 9, 1, 11 Two Independent Samples t Test Paired Samples t Test O One Sample z Test Two Proportion z Test Linear Regression t Test Two Proportion z Test O Chi-Square Test for Independence O ANOVA One Proportion z Test O One Samplet Test O Chi-Square Goodness of Fit TestMitt Romney was a presidential candidate in the Novem-ber 2012 U.S. presidential elections and he is a Mormon. The Public Religion Research Institute, during its 2011American Values Survey, asked 1019 random Americansif they would be comfortable with a Mormon serving asPresident. Fifty three percent reported that they wouldbe somewhat or very comfortable with this. Which ofthe following hypotheses should we test to determinewhether the majority of Americans would be somewhator very comfortable with a Mormon serving as president?A) H0 : p = 0.50 HA: p ≠ 0.50B) H0 : p = 0.50 HA: p 6 0.50C) H0 : p = 0.50 HA: p 7 0.50D) H0 : p = 0.53 HA: p 7 0.53E) H0 : pn = 0.53 HA: pn ≠ 0.53(Source: http://publicreligion.org/research/2011/11/2011-american-values-survey/)
- In recent years, many states have enacted tougher voter identification laws requiring a government issued photo ID. Proponents claim that these laws are necessary to reduce voter fraud. Opponents claim that voter fraud is rare and that since as many as 11% of eligible voters do not have the required identification, these tougher laws will discourage millions of minorities and low-income Americans from voting. The Washington Post conducted a national poll (July 7-19, 2012) and found that 1558 out of 2064 adults supported the tougher voter ID laws. 1)Construct a 95% confidence interval for the proportion of adults who approve of tougher voter ID laws. Document your work in the space provided below. Document how you computed the margin of error and the confidence interval in the space provided below. Round all numbers to 4 decimal places. 2)Is it likely that three-fourths of adults approve of these new laws?One of the questions in a study of marital satisfaction of dual-career couples was to rate the statement, "I'm pleased with the way we divide the responsibilities for childcare." The ratings went from 1 (strongly agree) to 5 (strongly disagree). The table below contains ten of the paired responses for wives and husbands. Conduct a hypothesis test at the 5% level to see if wife's satisfaction levels are lower than their husband's satisfaction level (meaning that, within the partnership, the husband is happier than the wife). Wife's score 3 2 3 3 4 2 1 1 2 4 Husband's score 2 2 1 3 2 1 1 1 2 4 NOTE: If you are using a Student's t-distribution for the problem, including for paired data, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) Part (a) State the null hypothesis. H0: ?d = 0 H0: ?d > 0 H0: ?d < 0 H0: ?d ≠ 0 Part (b) State the alternative hypothesis. Ha: ?d > 0 Ha:…Minnesota had the highest turnout rate of any state for the 2016 presidential election.† Political analysts wonder if turnout in rural Minnesota was higher than turnout in the urban areas of the state. A sample shows that 627 of 836 registered voters from rural Minnesota voted in the 2016 presidential election, while 414 out of 575 registered voters from urban Minnesota voted. (a) Formulate the null and alternative hypotheses that can be used to test whether registered voters in rural Minnesota were more likely than registered voters in urban Minnesota to vote in the 2016 presidential election. (Let p1 = the population proportion of voters in rural Minnesota who voted in the 2016 election and p2 = the population proportion of voters in urban Minnesota who voted in the 2016 election.) (b) What is the proportion of sampled registered voters in rural Minnesota that voted in the 2016 presidential election? (c) What is the proportion of sampled registered voters in urban…