Plagiarism ChQuestion 3A mayor running for re-election claims that during his term, average municipal taxes have fallen by $275, Aconscientious statistician wants to test this claim. She surveys 41 of her neighbors and finds that their taxesdecreased (in dollars) as follows:291, 304, 368, 379, 284, 248, 225, 338, 207, 312, 202, 241, 176, 249, 290, 244, 299, 275, 230, 333, 263,253, 236, 318, 282, 230, 300, 293, 259, 288, 295, 269, 314, 279, 261, 326, 305, 304, 286, 239, 314The statistician assumes a population standard deviation of $50. Do you think the statistician should rejectthe mayor's claim? Why or why not?Step 1: State the hypothesis.Step 2: Determine the Features of the Distribution of Point Estimates Using the Central Limit Theorem.By the Central Limit Theorem, we know that the point estimates are Select an answerwith distributionmeanand distribution standard deviationStep 3: Assuming the Claim is True, Find the Probability of Obtaining the Point Estimate.P(? ?= P(??%3!%3DStep 4: Make a Conclusion About the Claim.What do you think? Based on the probability you calculated in step 3 of obtaining the point estimate, wouldyou reject the claim? Thínk about your answer to this step yourself; this step is not graded.Submit Question

Introduction A statistician wanted to test the claim of a mayor who claimed that taxes has…

Answered: A mayor running for re-election claims…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Existing data (year: 1995) (Observed values) Accident Age group of drivers Severity 18-30 30-50 Fatal 27 22 Grievous 27 15 injured Minor 82 60 50+ 40 44 97 Total 89 86 120 262 injury Total 136 Source: Office of the Dy. Commissioner of Police (Tra 204 437
The following data are the number of pages in 40 books on a shelf. 119; 140; 178; 190; 205; 215; 217; 218; 232; 234; 240; 255; 270; 275; 290; 301; 303; 315; 317; 318; 326; 333; 343; 349; 360; 369; 377; 388; 391; 418; 420; 420; 421; 421; 422; 422; 429; 450; 475; 508 Select which of the below represent the correct box plot of the given data, and state the interquartile range. Select the correct box plot. 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 The interquartile range is Number
A congressperson wants to come up with a single value to describe the prices of homes in their district. However, their district consists of a few homes that are extremely expensive compared to the others. Which descriptive statistic should they use? a. Range b. Mode c. Median d. Mean
The manager of Hudson Auto Repair would like to get a better picture of the distribution of costs for new parts used in the engine tune-up jobs done in the garage. A sample of 50 customer invoices for tune-ups has been taken and the costs of parts, rounded to the nearest dollar, are listed below. 91 78 93 57 75 52 99 80 73 62 71 69 72 89 66 75 79 75 72 76 104 74 62 68 97 105 77 65 80 109 85 97 88 68 83 68 71 69 67 74 62 82 98 101 79 105 79 69 62 73 Develop a frequency distribution for these cost data. Use your own judgment to determine the number of classes and class width that provide a distribution that will be meaningful and helpful to the manager. a. Develop a stem-and-leaf display showing both the rank order and shape of the data set. (3) b. Develop a stretched stem-and-leaf display using two stems for each leading digit(s). (2) c. Which display is better at revealing the natural grouping and variation in the data? (1)
The state population is recorded as 1,200,000. There were 60,250 total deaths for the year. There were 615 confirmed cases of Hepatitis A were reported to the state health department of which 30 died. What was the cause-specific death rate for the year? Hint: Take the case specific deaths divided into the total state population. Make sure to include the % sign.
In a current study, a random sample of 20 teachers from Georgia and an independent random sample of 20 teachers from Indiana have been asked to report their annual income. The data obtained are as follows. Georgia 33567, 41744, 51186, 30464, 51606, 42617, 48830, 41455, 49371, 40828, 44007, 42605, 34923, 30519, 42581, 52952, 45651, 45084, 35455, 27800 Send data to calculator Indiana Annual income in dollars 29227, 35464, 45458, 32113, 29125, 38494, 23709, 32874, 34046, 21221, 39527, 56140, 38977, 47806, 44866, 36325, 34654, 38647, 37073, 36344 Send data to Excel The population standard deviations for the annual incomes of teachers in Georgia and in Indiana are estimated as $6500 and $6350, respectively. It is also known that both populations are approximately normally distributed. Construct a 90% confidence interval for the difference between the mean annual income of teachers from Georgia (,) and the mean annual income of teachers from Indiana (₂). Then find the lower limit and upper…
The following data (in thousands of euros) represent the net annual income for a sample of taxpayers in U.S. 47,55,18,24,27,41,50,38,33,29,15,77,64,22,19,35,39,41 67,55,121,77,80,34,41,48,60,30,22,28,84,55,26,105,62, 30,17,23,31,28,56,64,88,104,115,39,125,18,21,30,57,40 38,29,19,46,40,49,72,70,37,39,18,22,29,52,94,86,23,36 Graph this data set in a frequency histogram having 5 class intervals. Graph this data set in a frequency histogram having 10 class intervals. Which histogram do you think is more informative? Why?
A survey of enrollment at 35 community colleges across the United States yielded the following figures†. 6414; 1550; 2109; 9350; 21828; 4300; 5944; 5722; 2825; 2044; 5481; 5200; 5853; 2750; 10012; 6357; 27000; 9414; 7681; 3200; 17500; 9200; 7380; 18314; 6557; 13713; 17768; 7493; 2771; 2861; 1263; 7285; 28165; 5080; 11622 A school with an enrollment of 22,900 would be how many standard deviations away from the mean? (Round your answer to two decimal places.)
The following data represent the monthly phone use, in minutes, of a customor onrolled in a fraud prevention program for the past 20 months. The phone company decides to use the upper fence as the cutoff point for the number of minutes at which the customer should be contacted. What is the cutoff point? 530 496 331 467 548 346 511 377 411 415 360 339 363 372 343 477 474 333 610 441 The cutoff point isminutes. (Round to the nearest minute)
There are 435 seats in a nation's House of Representatives. The number of representatives per state is calculated using a statistical formula determined by law, but allocation is roughly proportionate to population. In 2010, the nation's population was estimated to be 309.1 million. The state's population was estimated at 26.1 million. How many representatives would you expect to be assigned to the state? Suppose the state actually has 34 representatives. Compare this with the expected number of representatives from the state.
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