A moving company claims that more than 90% of its customers are happy with its service. To test this claim the company surveys 500 customers and finds that 465 of them are actually happy about the service.  1) Set up the null and alternative hypotheses to test for the company’s claim.  2)  Find the p-value for the above-mentioned test.  3) At the significance level of 0.01, will you conclude that the company’s claim is false?

Q: In a recent​ poll, 810 adults were asked to identify their favorite seat when they​ fly, and 495 of…

A: Givenn=810p=495p^=xn=495810=0.611p=0.5α=0.01

Q: Suppose 234 subjects are treated with a drug that is used to treat pain and 55 of them developed…

A: Here, the claim of the test is that more than 20% of users develop nausea. This is representing in…

Q: Clark Barr makes a claim that 15% of all students who take statistics drop out. Rosetta Stone…

A: 1) Hypotheses: Let p be the proportion of all students who take statistics drop out. The aim is to…

Q: Identify the null and alternative hypotheses for this test. Choose the correct answer below.

A: Here Given  Sample size=n=212 X=54 Claim-More than 20 % of user develop nausea.

Q: Suppose 212 subjects are treated with a drug that is used to treat pain and 52 of them developed…

A: Correct answer: Option (B)

Q: Suppose 204 subjects are treated with a drug that is used to treat pain and 55 of them developed…

A:

Q: Suppose that in a random selection of 100 colored​ candies, 30​% of them are blue. The candy company…

A: Given information n = 100 coloured candies p-hat = 0.30 p = 25% Claim :- Percentage of blue candies…

Q: A study on crimes made a statement that at least 35% of all arsonists were under 21 years of age.…

A:

Q: Past studies have indicated that the percentage of smokers was estimated to be about 35%. Given the…

A: a) Denote p as the true population proportion of smokers.

Q: Consider a drug testing company that provides a test for marijuana usage. Among 308 tested subjects,…

A:

Q: A magazine reported that 47% of Canadians are confident they will take a winter vacation at some…

A: Given that  Sample size n =65 Favorable cases x =27 Sample proportion p^=x/n  =27/65 =0.4154 NOTE:-…

Q: in the study, 368 babies were born, and 210 of them were girls. Use the sample data with a 0.01…

A: Null Hypothesis: H0: The probability of a baby being a girl is not greater than 0.05. Alternative…

Q: The table below includes results from polygraph (lie detector) experiments conducted by researchers.…

A: There are two categorical variables which are subject and polygraph test indication. We have to test…

Q: Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. H,…

A:

Q: Suppose that in a random selection of 100colored​ candies, 29​% of them are blue. The candy company…

A: Claim: percentage of blue candies is equal to 26​% Null Hypothesis: H0:p=0.26 The percentage of blue…

Q: A used car dealer claims that the median cost of a used car is $12,000. In a random sample of 15…

A: Given median cost of a used car = $12000Total number of used cars in sample = n = 15Total number of…

Q: A random sample of 847 births included 428 boys. Use a 0.01 significance level to test the claim…

A: Denote p as the true proportion of new born babies, who are boys.

Q: According to the US Bureau of labor statistics, 7% of US female workers between 16 and 24 years old…

A: The hypotheses are given below: Null hypothesis: H0:p=0.07. Alternative hypothesis: H1:p≠0.07. Since…

Q: A publisher reports that 69%  of their readers own a particular make of car.  A marketing executive…

A: From the provided information,A publisher reports that 69% of their readers own a particular make of…

Q: Home Field Advantage in Baseball 2014 There were 2458 Major League Baseball (MLB) games played in…

A: The hypotheses for the test are given below. Null hypothesis: H0: p = 0.50 That is, the proportion…

Q: Suppose 243 subjects are treated with a drug that is used to treat pain and 54 of them developed…

A: Given,   The sample proportion is,

Q: Consider a drug testing company that provides a test for marijuana usage. Among 298 tested subjects,…

A: Given, The sample proportion is,

Q: ppose 245 subjects are treated with a drug that is used to treat pain and 53 of them developed…

A: GIVEN DATA,n=245x=53p^=xn  =53245  =0.2163claim:p>0.20α=0.10we have to complete the hypothesis…

Q: ail a course during their freshman year. A university journal club randomly samples 9 upperclassmen…

A:

Q: b)A poll showed the approval rating to be 0.45 (45%). A second poll based on 2500 randomly selected…

A:

Q: OD. Ho: pr0.03 H p=003 Identify the test statistic for this hypothesis test. The test statistic for…

A:

Q: Do the needs of patients in the emergency room differ for those who come by car vs. those by…

A: There are two categorical variables which are vehicle and Emergency room. Vehicle has 2 types and…

Q: Suppose your marketing department feels like 36% of customers prefer a certain feature for a…

A: a) The null hypothesis is: H0: p = 0.36

Q: The table below includes results from polygraph (lie detector) experiments conducted by researchers.…

A: We want to find the Chi square value by using contingency table.

Q: real estate company claims that 44% of all home buyers find their real estate agent through a…

A:

Q: Suppose 224 subjects are treated with a drug that is used to treat pain and 53 of them developed…

A: The objective of this question is to test a claim about a population proportion using a sample…

Q: suppose a hypothesis test is conducted where the level of significance a= 0.05 and the test results…

A:

Q: 28% of students at a university bought lunch from the cafeteria on class days. On a recent class…

A: Givenp=28%=0.28sample size(n)=486No. of students had bought lunch(x)=149p^=xn=149486p^=0.3066

Q: A marketing manager for a phone company claims that 55% of children ages 8-12 have their own cell…

A: Hypothesis testing

Q: Suppose 247 subjects are treated with a drug that is used to treat pain and 52 of them developed…

A: Given: Sample size (n) = 247 Number of subjects developed nausea (x) = 52 Hypothesized proportion…

Q: e that in a random selection of 100 colored candies, 22% of them are blue. The candy company claims…

A: given data, n=100p=0.22the candy company claims that the percentage of blue candies is equal to…

Q: The marketing department of an airline wants to show management that more than 60% of business…

A:

Q: a program designed to help patients stop smoking, 173 patients were given sustained care, and 801…

A: As the testing is required to find whether the actual proportion is 80%, it means that the…

Q: An annual survey of first-year college students asks 276,000 students about their attitudes on a…

A:

Q: A publisher reports that 44% of their readers own a particular make of car. A marketing executive…

A: From the provided information, A publisher reports that 44% of their readers own a particular make…

Q: A publisher reports that 52 % of their readers own a laptop. A marketing executive wants to test the…

A: Solution : Given that, Population Proportion p0 = 0.52 Sample Size n = 350 Sample Proportion p^=0.46…