A supplier of digital memory cards claims that no more than 1% of the cards are defective. In a random sample of 600 memory cards, it is found that 3% are defective, but the supplier claims that this is only a sample fluctuation. At the 0.01 level of significance, test the supplier's claim that no more than 1% are defective.

Q: In a survey, 37% of the respondents stated that they talk to their pets on the telephone. A…

A: Statistical tests are used to calculate the test statistics which is eventually used to determine…

Q: An Exercise Science instructor at IVC was interested in comparing the resting pulse rates of…

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Q: A builder claims that bidets are installed in 70% of all homes being constructed today in suburban…

A: A builder claims that bidets are installed in 70% of all homes being constructed today in suburban…

Q: ong wait times. To improve their image, man have worked hard to reduce their ER wait tim requently…

A: Given, sample size (n) = 139 sample mean (x̄) = 4.18 population mean ( µ ) = 4  sample standard…

Q: a survey by Bea et.al., it was found that 218 of 1,062 urban residents had a history of allergic…

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Q: Identify the P-value for this hypothesis test.

A: Here Given , sample size =293 x=128 sample proportion = p^ = 128293 = 0.4369 alpha  = 0.05

Q: A​ 9-year-old girl did a science fair experiment in which she tested professional touch therapists…

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Q: Most adults would erase all of their personal information online if they could a software firm of…

A: Given data, n=413 p^=0.59 Population proportion p=0.5 Test statistic=?

Q: When she was 9 years of age, a girl did a science fair experiment in which she tested professional…

A: Denote p as the true proportion of correct identification of the selected hand by the touch…

Q: Hospital emergency rooms (ERS) have a bad reputation for long wait times. To improve their image,…

A: The hypotheses for the test is given below. Null hypothesis: H0: µ ≤20 Alternative hypothesis: H1: µ…

Q: researcher claims that not more than 65% officers in the public offices come on time in their…

A: From the provided information, Sample size (n) = 65 From which 45 officers were in time that is x =…

Q: A​ 9-year-old girl did a science fair experiment in which she tested professional touch therapists…

A: The null and alternative hypotheses are given below. The sample proportion, p-cap is…

Q: According to an exit poll for an​ election,54.8 ​% of the sample size of 831 reported voting for a…

A: We have sample proportion p=54.8%=0.548   and sample size n=831 To test that the population…

Q: Inadequate exposure to outdoor lighting conditions may increase the risk of myopia in children. A…

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Q: A nutritionist in the FDA wants to compare the caloric content of medium French fries sold by…

A: We have to find decision and interprt  The  decision..

Q: publisher reports that 67% of their readers own a particular make of car. A marketing executive…

A: Solution

Q: Two suppliers manufacture a plastic gear used in a laser printer. The impact strength of these gears…

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Q: Due to the economy, are Americans staying in their first professional job longer? This was a ques-…

A: Given that,

Q: A 9-year-old girl did a science fair experiment in which she tested professional touch therapists to…

A: Given, Sample size, n = 288 x = 127 Sample proportion, p^ = 127/288 = 0.4 Significance level, α =…

Q: determine if the average travel time of all the university's students differed from 20 minutes. Find…

A: It is given that  Claim: The average travel time of all the university’s students differed from 20…

Q: Automobile mechanics conduct diagnostic tests on 150 new cars of particular make and model, to…

A: Let p denotes the true proportion of new cars with faulty catalytic converters. Given that the…

Q: The article “Facebook Use and Academic Performance Among College Students” estimated that 87% of…

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Q: H0= H1= Determine the critical value(s) for this hypothesis test. Round the solution(s) to two…

A: Given : sample size, n = 145 sample mean, x̄ = 4.08 population standard…

Q: According to an article, among 240 vinyl gloves, 63% leaked viruses.Among 240 latex gloves, 7%…

A: Given.  n1=240 ,p1=63%=0.63 n2=240 ,p2=7%=0.07 Alpha=0.01

Q: in a random sample of 60 students from a very large university, only 25% were able to identify…

A: Given Sample size n=60, sample proportion p^=0.25  Construct 95% CI for population proportion p

Q: The Congressional Budget office reports that 36% of federal dvilian employees have a bachelor's…

A: The test indicates that the proportion of employees holding bachelor's degrees or higher in the…

Q: what is the test statistic

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Q: A simple random sample of size n=200drivers with a valid​ driver's license is asked if they drive…

A: given data claim : p > 0.5n = 200x = 123α = 0.05p^ = xn = 123200 = 0.6150

Q: Among 200 randomly selected Internet​ users, it was found that 89 of them use the Internet for…

A: solution

Q: QSR Magazine published the latest results of it’s annual quick-serve restaurant drive-thru study.…

A: Denote p1, p2 as the true population proportions of accurately fulfilling drive-thru orders in…

Q: In a flowering plant, white flowers are dominant over red, and short plants are dominant over tall…

A: Given  phenotypes In a flowering plant  White, short:  206 Red, short:  83 White, tall:  65 Red,…

Q: A​ 9-year-old girl did a science fair experiment in which she tested professional touch therapists…

A: Consider that p is the true proportion of correct responses by random guesses.

Q: It is claimed that the average amount of time boys and girls (age between 7 and 11) spend playing…

A: Given information: Sample size of randomly selected girls n1=60 Sample size of randomly selected…

Q: Ine standard normat (2) distribution should be used The Student's t distribution should be used…

A: According to policy we supposed to answer 3 part kindly repost for remaining.

Q: this provide convincing evidence that a majortiy of American supported nuclear arms reduction at the…

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Q: In a random sample of 100 drivers, 80 were using seat belts while driving. Construct a 95%…

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Q: A hospital reported that the normal death rate for patients with extensive burns (more than 40% of…

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Q: To measure the effect of microfinance on women empowerment, a random sample of women was taken and…

A: Solution The samples are dependent if the observations are paired as before and after.

Q: A software company is interested in improving customer satisfaction rate from the 61% currently…

A: Sample size n =196 Favorable cases x =126 Sample proportion p^=x/n  =126/196 =0.6429

Q: at 20-year old women on a special diet will have an average weight of less than 125 Ibs. A as the…

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Q: A 9-year-old girl did a science fair experiment in which she tested professional touch therapists to…

A: