https://www.webassign.net/web/Student/Assignment-Responses/submit?dep=29439505&tags=autosave#question4647930_3Points]DETAILSPREVIOUS ANSWERSODonie is a personnel manager in a large corporation. Each month she must review 16 of the employees. From past experience, she has found that the rewours each to do with a population standard deviation of 1.2 hours. Let X be the random variable representing the time it takes her to complete one reviewHistributed. Let X be the random variable representing the mean time to complete the 16 reviews. Assume that the 16 reviews represent a random set of reFind the probability that the mean of a month's reviews will take Yoonie from 3.5 to 4.25 hrs.(a) Sketch the graph, labeling and scaling the horizontal axis. Shade the region corresponding to the probability.0.4 1.6 2.8ILLOWSKYINTROSTATT 7.1.004.PK.0.4 1.6 2.84 5.2 6.4 7.6 Dent/Assignment-Responses/submit?dep=29439505&tags-autosave#question4647930_3Yoonie is a personnel manager in a large corporation. Each month she must review 16 of the employees. From past experience, she has found thahours each to do with a population standard deviation of 1.2 hours. Let X be the random variable representing the time it takes her to complete ordistributed. Let X be the random variable representing the mean time to complete the 16 reviews. Assume that the 16 reviews represent a randomFind the probability that the mean of a month's reviews will take Yoonie from 3.5 to 4.25 hrs.(a) Sketch the graph, labeling and scaling the horizontal axis. Shade the region corresponding to the probability.O0.4 1.6 2.8 4 5.2 6.4 7.60.4 1.6 2.84 5.2 6.4 7.6

The graph for the probability that the mean of a month's reviews will take Yoonie from 3.5 to 4.25…

Answered: onie is a personnel manager in a large…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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A bottling company produces bottles that hold 8 ounces of liquid. Periodically, the company gets complaints that their bottles are not holding enough liquid. To test this claim, the bottling company randomly samples 16 bottles and finds the average amount of liquid held by the bottles is 7.7 ounces with a standard deviation of 0.4 ounce. Calculate the appropriate test statistic.
The intensive care unit lab process has an average turnaround timeof 26.2 minutes and a standard deviation of 1.35 minutes. The nominal value for this service is 25 minutes with an upper specification limit of 30 minutes and a lower specification limit of 20 minutes. The administrator of the lab wants to have four-sigma performance for her lab. Is the lab process capable of this level of performance?
A tire manufacturer claims that the mean life of its tire is 75,000 miles. The mean of a sample of 50 tires is 74,200 miles with a standard deviation of 2300 miles. Using an alpha of 5%, does the manufacturer’s claim appear to hold ture? Explain.
A national organization has been working with utilities throughout the nation to find sites for large wind machines that generate electricity. Wind speeds must average more than 19 miles per hour (mph) for a site to be acceptable. Recently, the organization conducted wind speed tests at a particular site. Based on a sample of 50 wind speed recordings (taken at random intervals), the wind speed at the site averaged 19.9 mph, with a sample standard deviation of 4.5 mph. To determine whether the site meets the organization's requirements, consider the test Ha: μ > 19, where μ is the true mean wind speed at the site. For a significance level of α = 0.10, do we reject the null hypothesis? Which of the following is an appropriate conclusion? At α = 0.10, there is insufficient evidence to conclude the true mean wind speed at the site exceeds 19 mph. We are 90% confident that the site meets the organization's requirements. At α = 0.10, there is sufficient…
A speedy oil and lubrication chain surveyed its stores as to the time needed to process a customer. Six customers from each of its 17 stores were selected at random and monitored. The processing times had a mean of 11 minutes with a standard deviation of 5.8 minutes. Find a 95% CI for the mean time needed to process a custome
An automobile company is looking for fuel additives that might increase gas mileage. Without additives, their cars are known to average 19 mpg (miles per gallons) with a standard deviation of 19/6 mpg on a road trip from Muscat to Sur. The company now asks whether a new additive increases this value. In a study, forty cars are sent on a road trip from Muscat to Sur. Suppose it turns out that the forty cars averaged x = (19 + 0.75) mpg with the additive. Can we conclude from this result that the additive is effective? a. With a significance level of 5%.b. With a significance level of 1%.
A bottling company produces bottles that contain 10 ounces of liquid. Periodically, the company receives complaints that its bottles do not contain enough liquid. To test this claim, the bottling company randomly samples 24 bottles and finds that the average amount of liquid held by the bottles is 9.8 ounces with a standard deviation of 0.3 ounces. Calculate the appropriate test statistic.
The physical plant at the main campus of a large state university recieves daily requests to replace fluorescent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a mean of 59 and a standard deviation of 8. Using the empirical rule (as presented in the book), what is the approximate percentage of lightbulb replacement requests numbering between 59 and 67?ans = %
A national organization has been working with utilities throughout the nation to find sites for large wind machines that generate electricity. Wind speeds must average more than 16 miles per hour (mph) for a site to be acceptable. Recently, the organization conducted wind speed tests at a particular site. Based on a sample of n=40 wind speed recordings (taken at random intervals), the wind speed at the site averaged x=16.8 with a standard deviation of s=4.1 mph To determine whether the site meets the organization's requirements, consider the test, H0: μ=16 vs, Ha: μ>16 where μ is the true mean wind speed at the site and a=.01 Suppose the value of the test statistic were computed to be 1.23. State the conclusion. At α = .01, there is insufficient evidence to conclude the true mean wind speed at the site exceeds 16 mph. At α = .01, there is sufficient evidence to conclude the true mean wind speed at the site exceeds 16 mph. We are 99% confident that…
The monthly starting salaries of students who receive an MBA degree have a population standard deviation of $120. What sample size should be selected to obtain a .95 probability of estimating the population mean monthly income within a margin of $20? [samplesize]
It is claimed that an automobile is driven on the average 20,000 kilometers per year with a standard deviation of 4,000 kilometers. To test this claim, a random sample of 100 automobile owners are asked to keep a record of the kilometers they travel. Would you agree with this claim if the random sample showed an average of 20,480 kilometers? Use a 0.1 level of significance.
The mean weight from a sample pf 256 computer parts created by a computer manufacture was 274.3 grams, with a standard deviation of 25.9 grams. Can this company claim that the mean weight of its manufactured computer parts will be less that 275 grams? Test this hypothesis using a 1% level of significance.

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