According to one survey taken a few years ago, 32% of American households have attempted to reduce their long-distance phone bills by switching long-distance companies. Suppose that business researchers want to test to determine if this figure is still accurate today by taking a new survey of 80 American households who have tried to reduce their long-distance bills. Suppose further that of these 80 households, 23% say they have tried to reduce their bills by switching long-distance companies. Is this result enough evidence to state that a significantly different proportion of American households are trying to reduce long-distance bills by switching companies? Let α = .01.

Q: poll in June 2020 found that 81% of American parents believe that virtual learning instead of…

A: Given data number of success , x= 822.0 sample size, n = 1081 population…

Q: The North American Free Trade Agreement (NAFTA) enacted in 1994 is a trilateral trade agreement…

A: 1. Here, the sample contains n = 908 randomly selected adults of Country A who are at least 18 years…

Q: 4. Businesses today regularly deal with malicious emails (also known as phishing attacks). Last…

A:

Q: 4. Failure to meet payments on student loans guaranteed by the United States (U.S.) government has…

A: Given Data; p^=147350=0.42   p=0.5 n=350

Q: Sleep apnea is a condition which the sufferers stop breathing momentarily while they are asleep.…

A:

Q: In a survey of 1009 parents of children ages​ 8-14, 74​% say they are willing to get a second or​…

A: Given n=1009 P=74%=0.74 E=2%=0.02

Q: There is a looming crisis in universities and colleges across North America. In most places…

A: Given information: Use the filter function from the excel to determine the number of professors who…

Q: Consider that Roane county, which calculated that the average firm size (in terms of number of…

A:

Q: 5. As of 2021, the country Swaziland in southern Africa (now officially named as Eswatini) had the…

A: Probability is used to measure the likelihood of the event happening. It takes values between 0 to…

Q: You are a bank manager and you want to secure a raise for your bank tellers. The board of trustees…

A: In order to determine whether the average number of customers served by the teller per day is…

Q: And a pool, 102 of 1020 randomly selected adults age 18 or older stated that they believe there is…

A:

Q: sider that Roane county, which calculated that the average firm size (in terms of number of…

A:

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: You may need to use the appropriate appendix table or technology to answer this question. According…

A: (a) CLAIM : Proportion of 22 to 30 years old job seekers who use social media in their  job search…

Q: suppose that from a sample of 200,000 new york workers, 32,400 reported traveling more than an hour…

A: About 16.2% of the workers in the state traveled more than an hour to work every day in 2011. That…

Q: The article “Credit Card Activity for College Students“ (…

A:

Q: According to the Pew Research Center,on the propotion of the American population who use only a…

A: A)Verifying the conditions:It is given that, the proportion of the American population who use only…

Q: 1.In a national survey of 2013 adults, 1283 indicated that they believe rudeness is a more serious…

A: Let N be the number of adults and X is indicated that they believe rudeness.Given thatN=2013,…

Q: The report “Undergraduate Students and Credit Cards in 2004: An Analysis of Usage Rates and Trends”…

A: The objective of the question is to determine whether the results of a survey can be generalized to…

Q: 1. Ruder Finn, one of the world's largest independent public relations agencies, recently announced…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: The report “Undergraduate Students and Credit Cards in 2004: An Analysis of Usage Rates and Trends”…

A: The objective of the question is to determine whether it is reasonable to generalize the reported…

Q: According to the Pew Research Center,on the propotion of the American population who use only a…

A: Solution:Part(D):Finding the test statistic value for the hypothesis test for…

Q: According to one survey taken a few years ago, 32% of American households have attempted to reduce…

A: The single proportion binomial test is used to compare a proportion of responses or values in a…

Q: According to the Pew Research Center, the proportion of the American population who use only a…

A: Given that n = 30 x = 16 α=0.10Given claim : proportion greater than 0.37The claim is either the…

Q: A national survey of 1,000 adults conducted on August 2-10, 2017 from CompareCards, conducted by…

A: The survey is conducted based on 1,000 adults conducted on August 2-10, 2017 from CompareCards,…

Q: Suppose a study revealed 46% of all subjects possessed trait A, 16% possessed both trait A and trait…

A: Solution

Q: Suppose a study revealed 63% of all subjects possessed trait A, 40% possessed trait B, and 21%…

A:

Q: a. Let A, = the student graduated within five years A, = the student did not graduate within five…

A: NOTE-AS PER POLICY I HAVE CALCULATED FIRST 3 SUBPARTS ONLY....PLZ RESUBMIT OTHER PARTS   here use…

Q: Does cancer cause cell phones? What variables might confound this data?

A: Logically speaking it doesn't make any sense by the conclusion that the cancer cause cell phones.…

Q: In 2001, the Gallup poll found that 81% of American adults believed that there was a conspiracy in…

A: Given that, x=634,n=1039 The sample proportion is,

Q: Suppose that in a survey of 1,000 U.S. residents, 721 residents believed that the amount of violent…

A: From the provided information, Number of residents = 1000 721 residents believed that the amount of…

Q: he North American Free Trade Agreement (NAFTA) enacted in 1994 is a trilateral trade agreement…

A:

Q: A friend of yours tells you that they heard that 65% of all college athletes end up losing a finger…

A: Given, n=101 X=60 Therefore, p^=Xn=60101=0.5941 The hypothesis to be tested is obtained as-…

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.