The management of ABC Industries is considering a new method of assembling its golf cart. The present method requires 42.3 minutes, on average, to assemble a cart. The mean assembly time for a random sample of 24 carts, using the new method, was 40.6 minutes, and the standard deviation of the sample was 2.7 minutes. Can we conclude that the assembly time using the new method is faster? A) State H0 and Ha

Q: reviously, an organization reported that teenagers spent 4.5 hours per week, on average, on the…

A: We heed to find null and alternative hypothesis.

Q: Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on the…

A: Introduction - z-score  z=x-μσwhere ,x=score σ=standard deviation μ=mean

Q: Perform the test of hypothesis on the following scenarios. The minimum wage earners of the National…

A: Given Information: Sample size n=144 Sample mean x¯=510 Sample standard deviation s=100

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A: Given : A group of students estimated the length of one minute without reference to a watch or…

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A:

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Q: In a hypothesis test with hypotheses Ho : µ = 90 and H1 : µ # 90, a random sample of 103 elements…

A: According to the given information, we have Mean = 94.3 Standard deviation = 22.1 Sample size = 103

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A: A chi-squared test of goodness of fit is suitable to be used in this situation.

Q: 1. A manufacturing firm produces a part for which the standard deviation in the diameter must not…

A:

Q: In a hypothesis test with hypotheses H.:u274 and H, u<74, a random sample of 40 elements selected…

A:

Q: 5) The managers for a fruit juice facility claim that the standard deviation for the ounces per…

A: We have to find correct hypothesis.

Q: (a) Find a 94% Bonferonni confidence interval for u- 42. (b) Which pairs of means are significantly…

A: a) 94% Bonferonni confidence interval for μ3-μ2: Formula: x¯3-x¯2±tn2+n3-2,α2pMSE1n2+1n3 Given…

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A: a.   Assume that μ is the true average number of days to fill customer orders.

Q: Consider a sample of 48football​ games, where 31 of them were won by the home team. Use a 0.01…

A: Stating the appropriate null and alternative hypotheses: The hypotheses are given below: Null…

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A: Given information: An organization previously reported that average number of hours per week that…

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Q: For each statement, select the correct null hypothesis, H0, and alternative hypothesis, Ha, in…

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A:

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A: It is given that the claim is that the treatment is expected to decrease scores.

Q: 3. A manufacturer of sports equipment has developed a new synthetic fishing line that he claims has…

A: Given, Population mean = μ = 8Standard deviation =σ= 0.5Sample mean = x = 7.8Sample size =n= 50Level…

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A:

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A: Test hypothesis: Denote the population proportion of students at a local university who had read at…

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A: Answer - Given a left tailed hypothesis test              With unknown standard deviation. The…

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A:

Q: A company that produces snack foods uses a machine to package 454g bags of pretzels.  The hypotheses…

A:

Q: 4. The average cost of a hotel room in Al Kharj is said to be SAR 190 per night. A random sample of…

A: We have given that,  Hypothesized mean (μ)= 190 , sample mean   (x̄) = 191.5, standard deviation (s)…

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A: We have to find out hypothesis for given data .....

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A: The provided data is, The hypotheses are; H0: The average time required by the night guard to walk…

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A: Given, In a​ one-tail hypothesis H0 is only rejected in the upper​ tail  ​p-value=0.2047…

Q: The National Highway Traffic Safety Administration reports the percentage of traffic accidents…

A: As per our guidelines, we are allowed to answer first three sub-parts only. thanks   If the…

Q: In a hypothesis test with hypotheses H.:H2 74 and H,: < 74 a random sample of 20 elements selected…

A: Given n=20, Xbar=67.8, s=11.9, mu=74 Sigma( unknown) so we use t statistic for testing the…

Q: 22. Researchers investigated whether a new process for producing yarn could reduce the mean amount…

A: Given that Researchers investigated whether a new process for producing yarn could reduce the mean…

Q: Two processes in a manufacturing line are performed manually: operation A and operation B. A random…

A: Solution: Given information: n1=50 Sample size of operation An2= 38  Sample size of operation B…

Q: A company that produces snack foods uses a machine to package 454g bags of pretzels. The hypotheses…

A: Type I error: The type I error is the rejection of the null hypothesis when it is actually true.…

Q: If a simple random sample of size 34 was collected, the following hypotheses tests will have the…

A: Correct answer is H0: μ=42  and H1: μ≠42

Q: A researcher conducts a study measuring 15 children before and after they attend a math intervention…

A:

Q: The Board of Visitors hypothesize that self-esteem is increased by the time spent in college. After…

A: Given data is appropriate for t-test for paired sample . because it is a small sample and it is…

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A:

Q: In 12 test runs over a marked course, a newly designed motorboat averaged 33.6 seconds with a…

A:

Q: An automotive manufacturing company claims that under 10% of its new vehicles will require warranty…

A: Solution According to guideline we solve only three subpart

Q: Consider a sample of 50   football​ games, where 28   of them were won by the home team. Use a…

A:

Q: A study is conducted to determine if bus ridership in a large city is higher during the afternoon…

A: Note ,   Since you have asked multiple question, we will solve the first question for you. If you…

Q: In a hypothesis test with hypotheses Ho : µ = 24 and H1 : µ # 24, a random sample of 38 elements…

A: The given sample has a size n=38, the sample mean is x¯=26 and the population standard deviation is…

Q: A manager is interested in determining if the population standard deviation has dropped below 103.…

A: Given that Sample size n = 27 Sample SD = 69 Level of significance = 0.10

Q: A group of students estimated the length of one minute without reference to a watch or clock, and…

A: Solution To test the mean we will use t distribution for single mean.

Q: A Labrador retriever club has 130 members: 65 black Labs, 44 golden Labs, and 21 chocolate Labs.…

A: It is given that the number of members in a club is 130.