More hypotheses For each of the following, write outthe alternative hypothesis, being sure to indicate whetherit is one-sided or two-sided. a) Consumer Reports discovered that 20% of a cer-tain computer model had warranty problems over the first three months. From a random sample, the manufacturer wants to know if a new model hasimproved that rate. b) The last time a philanthropic agency requested dona-tions, 4.75% of people responded. From a recent pilot mailing, they wonder if that rate has increased.c) A student wants to know if other students on hercampus prefer Coke or Pepsi.

Q: As a result of complaints from both students and faculty about lateness, the registrar at a large…

A: Given information- We have given the scheduled break between the classes = 15 minutes We have to…

Q: 2. A startup company has an overall of its states of 90% that has been settled for 20 days. A tech…

A:

Q: Mr. Jones believes that the mean income of lawyers is now less than $65 thousand per year. Which is…

A: Given,   Claim: Mr.Jones believes that the mean income of lawyers is now less than $65 thousand per…

Q: ) Suppose thal H lipchime ) of a certain madel of a calalator pollows an exponen tial dishi buhion…

A: Given: X = lifetime of calculator  X follows Exponential distribution with mean 10 years

Q: 1. An airline claims that at least 90% of their lost luggage is recovered and delivered to its…

A:

Q: One survey conducted by a major leasing company determined that the Lexus is the favorite luxury car…

A: Here we need to find the required test statistic for the given situation. The population proportion…

Q: State the null and alternative hypotheses for the following statement and the type of test being…

A:

Q: A research center claims that at least 25% of adults in a certain country think that their taxes…

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

Q: A research center claims that 28​% of adults in a certain country would travel into space on a…

A:

Q: A university library ordinarily has a complete shelf inventory done once every year. Because of new…

A: Given information: Sample size(n)= 800 books. The hypothesis to be tested is: H0: p=0.01H1:…

Q: Based on past experience, a hiring manager believes that less than one-third of applicants are…

A:

Q: The mayor of a town believes that 28% of the residents favor construction of a new bridge. Is there…

A: Solution: The given claim is that 28% of the residents favor construction of a new bridge.

Q: 2. Based on a poll of registered voters in a large city, 120 out of a random sample of 250 women…

A: The total number of women n1=250The number of women intend to vote Trump =120The proportion of women…

Q: A company knows from past experience that 50% of its employees have chosen to participate in a…

A:

Q: A newsletter publisher believes that over 68% of their readers own a personal computer. Is there…

A: According to the provided information, a newsletter publisher believes that over 68% of their…

Q: A newsletter publisher believes that over 68%68% of their readers own a personal computer.  Is there…

A: Null hypothesis: Alternative hypothesis:

Q: A research center claims that at least 27% of adults in a certain country think that their taxes…

A: Identify the correct option for claim.   The correct option for claim is determined below as…

Q: A research center daims that at least 23% of adults in a certain country think that their taxes will…

A: Given data A research center claims that at least 23% of adults in a certain country think that…

Q: Back to school, again Based on the 74% national reten-tion rate described in Exercise 23, does a…

A: Consider that p is national retention rate. The standard normal variable Z is defined as, z = (p̂ –…

Q: Claim: A majority of adults would erase all of their personal information online if they could. A…

A: Let p be the population proportion  Given  p=58%=0.58

Q: In a survey of 1120 new college graduates, 281 had a professional job on graduation day. 1. one…

A: The hypothesized proportion is 0.24.

Q: A newsletter publisher believes that under 48%48% of their readers own a personal computer.  Is…

A: Solution: Let p be the proportion of the readers own a personal computer. From the given…

Q: he RAND Health Insurance Study gave every subject a fixed amount of money that covered the maximum…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…

Q: A research center claims that at least 30% of adults in a certain country think that their taxes…

A: Claim: C. At least 30% of adults in the country think that their taxes will be audited.   The null…

Q: Identify the alternative hypotheses. bpm (Type integers or decimals. Do not round.)

A: In this scenario, the claim is that the mean pulse rate of adult males is equal to 69 bpm. The test…

Q: The manager of the Danvers-Hilton Resort Hotel stated that the meanguest bill for a weekend is $600…

A: Given: Claim:  The mean guest bill for the weekend would be less or equal to $600.

Q: A local police chlef claims that more than 29 % of all drug related arrests are never prosecuted. A…

A: Here we need to test H0: p=0.29 vs H1: p>0.29. Given that significance level = 0.02

Q: of adults in a certain country would travel into space on a commercial flight if they could afford…

A: Given: P=0.29n=1000P^=0.33α=0.10

Q: The local sheriff has staked his campaign for re-election on the claim that that at least 88% of the…

A: From the provided information, The Sheriff claim that at least 88% of the drivers stopped on…

Q: When the 2000 GSS asked whether human beings developed from earlier species of animals, 53.8% of…

A: It is given that 53.8% of 1095 respondents answered that this was probably or definitely not true.

Q: 2. A barangay health officer claimed that 60% of infants had completed polio vaccine. On the basis…

A: A barangay health officer claimed that 60% of infants had completed polio vaccine. On the basis of…

Q: 2. Based on a poll of registered voters in a large city, 120 out of a random sample of 250 women…

A: Null hypothesis: There is no difference in the proportion who intended to vote for Trump among male…

Q: Assume that a survey of 1009 Californians found that 549 of them favored Proposition 16. Find the…

A: Z test is one of the large sample tests, when the sample is 30 or more than 30we use this test. We…

Q: It Is the alm of the Department of Health(DOH) to glve measles vaccine to infants. When a barangay…

A: One sample proportion z test: One sample proportion z test is a hypothesis test that is used to test…

Q: research center claims that 24​% of adults in a certain country would travel into space on a…

A:

Q: Determine the null and alternative hypotheses based on the following:  For students who first…

A: Here Given For students who first enrolled in two year public institutions in a recent semester, the…

Q: Determine whether the alternate hypothesis is left-tailed, right-tailed, or twa-tailed.

A: We know that,  H0 :μ =24  versus H1:μ ≠24 We have to check the above alternative hypothesis is,…

Q: Based on past experience, a hiring manager believes that less than one-third of applicants are…

A: Solution: State the hypotheses Null hypothesis: That is, the proportion of applicants that are…

Q: According to a recent marketing campaign, 90 drinkers of either Diet Coke or Diet Pepsi participated…

A: The proportion of success for n trial is calculated using the z test, when the population of…

Q: last year, 46% of business owners gave a holiday gift to their employees. a survey ofbusiness owners…

A: a.

Q: Are Republicans less likely than Democrats Fourth of July? 409 of the 660 Republicans surveyed…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: The director of a university placement office claimed that 50% of the graduating seniors had…

A: Test is that whether 50% of the graduating seniors had finalized job arrangements by May 1. Note :…

Q: Suppose that a report indicates that 28% of Canadian homeowners have experienced difficulty in…

A:

Q: The commissioner of the state police is reported as saying that about 10% of reported auto thefts…

A: Given,The commissioner of the state police is reported as saying that about 10% of reported auto…

Q: At a certain college, it is estimated that about 37% of the students have cars on campus, and with…

A:

Q: Help | According to an online survey by Harris Interactive for job site CareerBuilder.com…

A:

Q: In a survey of 1,000 women age 22 to 35 who work full-time, 555 indicated that they would be willing…

A: Given : Sample size = n = 1000 Sample number of events = D = 555 Sample proportion = p^ = Dn = 0.555…

Q: In a survey of 1120 new college graduates 281 had a professional job on graduation day. year ago the…

A:

Q: An airline promotion to business travelers is based on the assumption that no more than two-thirds…

A: State the hypotheses. That is, there is no evidence that the proportion of business travellers who…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.