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The speed with which utility companies can resolve problems is very important.
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Assume that the duration of human pregnancies can be described by a normal model with mean 268 days and standard deviation 17 days. What percentage
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In china, the probability if a baby being a boy is 0.5845. Couples are allowed to only have 1 child. If relatives give births to 5 babies, what is
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A fair coin is tossed three times consecutively. Let the random variable X represent the number of heads on the first toss and y the total number of...
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A human gene carries a certain disease from the mother to the child with a probability rate of 39%. That is, there is a 39% chance that the child...
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Team Assignment 2 - Charles Book Club Page 1 Second Team Assignment Submission Deadline: Monday, April 25, 11:59 PM Submit two files ONLY to your
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How is the rejection region defined, and how is that related to the p value? When do you reject or fail to reject the null hypothesis?
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which is the best description of what a residual plot should look like to indicate the linearity and constant variation conditions are satisfied?
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96 % of workers had a travel time to work of more than 60 minutes. An urban economist believes that the percentage has increased since then.
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Hello Class and Prof. The time estimates are in hrs. Complete final inspections A-complete elevator inspection and certification B-Perform architects...
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Scores on a mathematics examination appear to follow a normal distribution with mean of 65 and standard deviation of 15.
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Attached are three scenarios that require statistical process control, to answer. Attached are the 3 scenarios and the questions for each.
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Hwy Fuel Efficiency Mean 41.7189 Standard Error 0.8429 Median 41.7189 Mode 33.0874 Standard Deviation 7.0518 Sample Variance Kurtosis -0.6874...
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An appliance store knows that if it sells its new gadgets for R50 each it can sell 200 per month, and if it sells the same gadgets for R40, it will...
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In New York City the average response time for calls to the fire department is about 5 minutes, according to a 2008 article published in the New York...
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A study of consumer smoking habits includes 167 people in the 18-22 age bracket (59 of whom smoke), 148 people in the 23-30 age bracket (31 of whom
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A study is run to evaluate risk factors for incident hypertension.
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An accounting firm is planning for the next tax preparation season. From last year's returns, the firm collects a systematic random sample of 100...
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Using SPSS, demonstrate that the standard deviation of a set of scores can vary without changing the mean. (We have not provided a solution for this
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Problems at major companies. The Organization Development Journal(Summer 2006) reported on the results of a survey on human resource officers (HROs)...
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Suppose a student takes a 20 question multiple-choice test and guesses at every answer. If there are exactly four choices on each question, what is
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The business of selling insurance is based on probability and the law of large numbers. Consumers buy insurance because we all face risks that are...
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Explain what your computed population mean and population standard deviation were. Divide the 100 listing prices into 10 samples of n=10 each. Each...
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Discuss how statistical analysis is important in your major (choose either of manufacturing,construction management, technology management or...
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Write an R function perm.chi.test (x, y, N) that allows you to do a permutation chi square test. Compare the performance of a permutation chi square
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for the population of individuals who own an Iphone, suppose p=.25 is the proportion that has a given app. For a particular iphone owner, let x=1 if...
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The John Hopkins Regional Talent Searches gives the Scholastic Aptitude Test (intended for high school juniors and seniors) to 13-year-olds.
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Networked computers tend to slow down when they are overloaded. The response time is how long it takes from when you press the Enter key until the...
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The mean weight of loads of brick is 46.0 tons with a standard deviation of 8.
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A group of educators want to determine how effective tutoring is in raising students grades in a math class, so they arrange free tutoring for those...
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According to a college survey, 22% of all students work full time. Find the mean for the random variable X, the number of students who work full time...
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So I have a question on probability. Let's say we have two variables that jointly follows bivariate normal distribution.
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Create a table in which you propose the calculation and graphs you will need to perform to answer the health question you are investigating. Then
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the average credit card debt for a recent year was $9205. Five years earlier the average credit card debt was $6618.
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It has been determined that 27.5% of drivers checked at a road stop, on new year's eve, show traces of alcohol in their blood. If 24 people are...
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Example: From what she has heard about the two instructors who will teach a freshman statistics course, Jasmine estimates that her chances of passing...
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Then compute the probability of B in each situation (these are the P(B|An)). Finally weigh each of these probabilities with the probabilities that...
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19 percent of the employees in a company have managerial positions, and 29 percent of the employees in the company have MBA degrees. Also, 64 percent...
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$FL2@(#) IBM SPSS STATISTICS DATA FILE 64-bit MS Windows 19.0.0 ################A#########Y@12 Mar 1315:03:15 ###########################IDNUM
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Clark Heter is an industrial engineer at Lyons Products. He would like to determine whether there are more units produced on the night shift than on...
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a jewelry supplier has a supply of earrings which are 30% platinum. a store owner orders five sets of earrings from the supplier.
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We must use a t distribution table (not a Z or normal distribution table) when: is known and n is below 30 b. is known and n is 30 or larger c.
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Consider the following nancial planning problem. Suppose that you start the year with $3,800 in cash, and your expected liabilities throughout the...
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The scores on a math test are normally distributed with a mean of 74 and a standard deviation of 8. The test scores range from 0 to 100. Seven...
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Two students randomly selected from a statistics class, and it is observed whether or not they suffer from math anxiety. Indicate which is simple and...
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Hello, I have 3 sets of homework from statistics, all about 8-10 questions each. Subgroups (regression) 2. residual plots 3.
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Area Gas Prices - Random Sample Minneapolis Price of Regular Station Unleaded 1 $3.24 2 $3.03 3 $3.63 4 $3.58 5 $2.94 6 $3.68 7 $3.14 8 $3.36 9 $3.40...
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Historically, the average waiting time spent on hold when phoning customer service for a particular bank was one and a half minutes.
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Reference all sources.Compare the advantages and disadvantages of boxplots, histograms and moving average plots for visual representation and analysis of time series data. Enclose examples of the app
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An average computer mouse inspector can inspect 50 mice per hour. the 48 computer mice inspectors at a particular factory can only inspect 46 mice...
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