A sample of 1100 computer chips revealed that 26% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 29% of the chips do not fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that do not fail is different from the stated percentage. Is there enough evidence at the 0.05 level to support the manager's claim? is there sufficient evidence or is there not sufficient evidence

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: Given,

Q: A television executive claims that the percent of households that watch the Macy's parade on…

A: The null and alternative hypothesis is given by,H0:P=0.65Ha:P<0.65 Given: n=171, x=households…

Q: A consumer advocacy group is doing a large study on car rental practices. Among other ungs, the mean…

A: Here, the claim is the mean mileage (µ) is less than 2850 miles. So, the alternative hypothesis will…

Q: The admisnistrators of Rowan university wants to know more about the knowledge of students regarding…

A: Given information Sample size(n) = 35 Sample mean = 58 Standard error = 3.2 Significance level (α) =…

Q: A recent survey showed that from a sample of 500 packages delivered by a Postal Service, 480 were…

A: Given: p0=0.98α=0.01n=500x=480

Q: The sales rep of a waterbed claims that 25% of the Filipino died because of cardiovascular diseases.…

A:

Q: A survey recently reported that the mean national annual expenditure for inpatient and outpatient…

A: Given information Sample mean x̅ = $5,516 Population mean µ = $5,423 Sample size n = 352 Standard…

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: The test statistic is 1.59 and the P-value is 0.060.

Q: A sample of 16001600 computer chips revealed that 78%78% of the chips do not fail in the first…

A: Determine the level of significance. Significance level:  In order to decide how small the p-value…

Q: A credit score is used by credit agencies​ (such as mortgage companies and​ banks) to assess the…

A:

Q: Approximately 20.5% of the U.S. population 5 years old and older speaks a language other than…

A: sample size is 400 & Population Proportion =0.205

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: What is the null hypothesis? see examples in E3:G8 b) What is the alternative hypothesis? see…

A: Let p be the proportion of students try a rental service at some point in their college career. It…

Q: A credit score is used by credit agencies​ (such as mortgage companies and​ banks) to assess the…

A: Denote μ as the true mean credit score.

Q: score A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: Given:Mean(x)=716.2Standard deviation(s)=81.1Sample size(n)=34α=0.05

Q: Are the conditions for inference met

A:

Q: An academic medical center surveyed all of its patients in 2002 to assess their satisfaction with…

A: Population mean = 84.5 Sample mean = 89.2 Sample standard deviation = 17.4 n = 125 Level of…

Q: product magazine recently ran a story concerning the increasing prices of digital cameras. The story…

A: Given that, Sample size n=22 It was desired to test to determine if that average price of all…

Q: A credit score is used by credit agencies​ (such as mortgage companies and​ banks) to assess the…

A: According to a​ survey, the mean credit score is 700.8 A random sample of 45 ​high-income…

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A:

Q: AstraZeneca is the maker of the stomach medicine Prilosec. Suppose the companys management is…

A: The given data is as follows:Sample size, Sample mean, Sample standard deviation,

Q: CCN and ActMedia provided a TV channel targeted to individuals waiting in supermarket checkout…

A:

Q: A service station owner believes that equal numbers of customers prefer to buy gasoline on every day…

A: It is needed to test the whether the number of customers who prefers to buy gasoline on each day of…

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: Given information Population mean µ = 707.6 Sample size (n) = 43 Mean x̅ = 718.3 Standard deviation…

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: One sample t-test: One sample t-test is used to test the significance difference between population…

Q: propriate test to determine if high-income individuals have higher credit scores at the a = 0.05…

A: Given n=39 Standard deviation=84.3 X bar=714.6 Mu=702.5

Q: A credit score is used by credit agencies​ (such as mortgage companies and​ banks) to assess the…

A: One sample t test: One sample t test is the hypothesis test that is used to test whether the mean of…

Q: The admisnistrators of Rowan university wants to know more about the knowledge of students regarding…

A: State the given values. Now, we know that

Q: The federal agency for which you work has a contract with an electrical supply company to provide a…

A: Given,   The sample proportion is,

Q: credit score is used by credit agencies to assess the creditworthiness of individuals. Values range…

A: Sample size n =24 Sample mean=735.6 Standard deviation =74.5 NOTE:- According to bartleby guidelines…

Q: A credit score is used by credit agencies​ (such as mortgage companies and​ banks) to assess the…

A: The random variable credit scores are normally distributed. The population mean is 707.9. We have to…

Q: According to a survey conducted by the Association for Dressings and Sauces, 20% of American adults…

A: Given: A survey is conducted by the Association for Dressings and Sauces. Let n denote the sample…

Q: psychologist wanted to know if students in her class were more likely to cheat if they were low…

A: ANSWER:After reviewing the data set, we need to determine whether the observed patterns support or…

Q: Step 1 of 3 :   State the null and alternative hypotheses for the test. Fill in the blank below.…

A: Given : n1= 500 n2= 250 significance level, 0.05 sample proportion p̂1…

Q: home improvement company is interested in improving customer satisfaction rate from the 58%…

A: We have given that  Sample size n=273 favorable cases x=171  Population proportion p=58%=0.58 Sample…

Q: A home improvement company is interested in improving customer satisfaction rate from the 51%…

A: Step 1:Suppose p is the customer satisfaction rate of the population.It is needed to test whether…

Q: A researcher gathered a sample of participants who volunteered for a studying of phobias. She…

A: A researcher gathered a sample of participants who volunteered for a studying of phobias. She…

Q: Make the decision rule. (Negative amount should be indicated by a minus sign. Round your answer to 2…

A: Given that Sample size n = 10000 Number of deaths due to lung cancer, X = 6 Level of significance =…

Q: The mayor of a town believes that 32 % of the residents favor annexation of a new bridge. A…

A: Population proportion, Sample size, Significance level,

Q: A credit score is used by credit agencies​ (such as mortgage companies and​ banks) to assess the…

A: Given, sample mean, x-bar is 724.4. Population mean, µ is 705.6. Sample standard deviation, s =…

Q: A credit score is used by credit agencies​ (such as mortgage companies and​ banks) to assess the…

A:

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: