12.65 President’s Job Rating. A poll conducted by Gallup in December 2013 asked a sample of American adults whether they approved of the way President Obama was doing his job; 42% said yes, with a margin of error of plus or minus 3 percentage points. During that same time period, Quinnipiac University asked the same question of a sample of American adults; 38% said yes, with a margin of error of plus or minus 2 percentage points. Can the conclusions of both polls be correct? Explain your answer.

Q: A survey asked 827 randomly sampled registered voters in California to select a response best…

A: For the above analysis: Null hypothesis: There is no difference in support of drilling b/w those who…

Q: central airlines claims that the median price of a round-trip ticket from chicago, illinois, to…

A: Sample size(n)=25 Median price=606 The number of tickets below $606 =11

Q: According to Wine-Searcher, wine critics generally use a wine-scoring scale to communicate their…

A: The number of observations n is 12.

Q: Among college students, the proportion p who say they're interested in their congressional…

A: The proportion of students who say they are interested in their congressional district's election…

Q: 1' (a) State the null hypothesis Ho and the alternative hypothesis H,. Ho H, :0 (b) Determine the…

A: It is given that Sample size n = 275 Number of successes, X = 221 Level of significance = 0.01 Note…

Q: At the 5% level, is there enough evidence to show that the proportion of Australians in November…

A: It is given that Sample size n = 631 Number of Australian thought unemployment would increase, X =…

Q: Nationally, 83% of Americans have earned a high school diploma.  We want to see if the proportion of…

A: We have to find sample proportion.

Q: Acquaintance Rape on College Students. College students are primarily inexperienced young adults who…

A: Acquaintance Rape on college students. College students are primarily inexperienced young adults who…

Q: A guidance counselor at a university is investigating demand for study abroad. The question before…

A: Formula : CI=(p̂1- p̂2)± ME

Q: 3. A Gallup poll surveys American beliefs about big business. The Gallup poll reports that 26% of…

A: Population proportion, p=0.26 Sample size, n=20

Q: Use the Plan, Solve and Conclude steps in answering this question

A:

Q: Among college students, the proportion p who say they're interested in their congressional…

A: The random variable interest rate follows normal distribution. We have to test whether the…

Q: In the most recent Rasmussen Report on congressional performance, a random sample of registered…

A:

Q: A magazine article conducted a survey of 807 people in Phoenix metro area and found that 45% of the…

A: Sample size (n) = 807 Population proportion (p) = 45% = 0.45 And  97% confidence interval is (41%,…

Q: ents, the proportion p who say they're interested in their congressional district's election results…

A: Answer  X =196 n =270 alpha =0.01 This is one -tailed test [or] Right -tailed test.

Q: Health insurance benefits vary by the size of the company (the Henry J. Kaiser Family Foundation…

A: a:For the given data, the chi-square test for association is appropriate.Null Hypothesis:H0: The…

Q: YouTube is a popular destination on the internet; let's look at how YouTube usage is distributed…

A: Event Y denote that selected internet user has to use internet and Ai ,i=1,2,and 3 denote that…

Q: The General Social Survey determined in 2016 that 57% of US Residents think that the use of…

A:

Q: In a local election, 56.0% of those aged under 40 and 48.8% of those aged over 40 vote in favor of a…

A: Independent Events:Two events are said to be independent if occurrence of one event does not affect…

Q: An executive for a large company is considering a change to health insurance plans offered to the…

A: An executive for a large company is considering a change to health insurance plans offered to the…

Q: A survey asked 827 randomly sampled registered voters in California to select a response best…

A: The data for responses of the graduated college and didn't graduate college respondents is given.…

Q: A hip-hop radio station asks its listeners to e-mail or text an answer to this question: “Do you…

A: We have to given that the  hip-hop radio station asks its listeners to e-mail or text an answer to…

Q: 7. According to the February 2008 Federal Trade Commission report on consumer fraud and identity…

A: Solution: Given information: n= 1435 Sample size of complaints  x= 322 complaints of identity theft…

Q: Among college students, the proportion p who say they’re interested in their congressional…

A: Given:  Among the college students the proportion p who say they’re interested in their…

Q: A poll asked college students in 2016 and again in 2017 whether they believed the First Amendment…

A: It is given that-Number of students surveyed in 2016:People who believed the claim: Number of…

Q: Researchers at a drug company are testing the duration of a new pain reliever. The drug is normally…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: In a 2021 poll by the Public Religion Research Institution, 2,508 Americans were asked if they agree…

A: Given: n = 2508 The margin of error E = 2.1 Formula Used: σ = EnZ

Q: Random digit dialing telephone surveys used to exclude cell phone numbers. If the opinions of people…

A: Cell-only sample Landline sample Democrat or lean Democratic 49 47 Refuse to lean either way…

Q: Among college students, the proportion p who say they’re interested in their congressional…

A:

Q: TechBuzz is an IT company that monitors the status of large data warehouses. According to TechBuzz,…

A: In a sample of 190 servers, 142 servers are over-utilized. Therefore, the sample proportion of…

Q: Among college students, the proportion p who say they're interested in their congressional…

A:

Q: Among college students, the proportion p who say they're interested in their congressional…

A: n=265x=192

Q: Four scenarios of statistical studies are given below. Decide which study uses a population…

A:

Q: Among college students, the proportion p who say they're interested in their congressional…

A: Givensample size(n)=275x=212sample proportion(p^)=xn=212275≅0.7709significance level(α)=0.10

Q: Among college students, the proportion p who say they’re interested in their congressional…

A: From the provided information, Sample size (n) = 250 From which 180 students say they’re interested…

Q: A website posts evaluations on airlines. It posts the most positive and the most negative comments…

A: For the given statement

Q: A survey is conducted to determine the opinions of people on global warming. In a random sample of…

A: Given: n=150 global warming is a serious world problem(x)=408

Q: Among college students, the proportion p who say they're interested in their congressional…

A: Sample size  n = 275X = 199Significance level = 0.01 Claim : political scientist claim that…

Q: An online shop owner believes that 85% of her customers will want to go into a real store. She…

A: It is given that the an online shop owner believes that 85% of her customers will want to go into a…

Q: Macmillan Learning (a) What is the sum of the percentages for these top social media sites? Give…

A: Using only the first initial of the top social media sites the data set provided in the question is…

Q: Among college students, the proportion p who say they're interested in their congressional…

A: A) first of all we have to construct null and alternative hypotheses as followswe know that null…

Q: State the null hypothesis H0 and the alternative hypothesis H1 . H0: H1: (b) Determine the type of…

A: Given that  Sample size n =270 Favorable cases x =194 Sample proportion p^=x/n  =194/270 =0.7185…

Q: In order to estimate the proportion of students at a small liberal arts college who watch reality TV…

A: Bias: Bias is the unfairness of an experiment. It is the factor that makes the result of the final…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.