Why is it important to maximize the degree to which samples and data used to train or build algorithms are representative of the population?
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Q: An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and…
A: Given information: Type of Ride Roller Coaster Screaming Demaon Log Flume Method 1 41 52…
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Q: An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and…
A: From the given information, Factor A – Method of loading or unloading Factor B – Type of ride…
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Q: An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and…
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Q: An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and…
A: The data shows the type of ride and method of loading.
Q: An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and…
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Q: An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and…
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Q: An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and…
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Q: An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and…
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Q: An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading…
A: (a) According to the provided data, factor A is the loading and unloading method and factor B is the…
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- Is the number of games won by a major league baseball team in a season related to the team's batting average? Data from 14 teams were collected and the summary statistics yield: Ey = 1,134 x= 3.642, =93,110, = 948622, and Txy = 295.54 Find the least squares prediction equation for predicting the number of games won, y, using a straight-line relationship with the team's batting average, x.Suppose, a dairy farmer wants to compare the amount of milk produced by dairy cattle fed on four different diets. Five cattle are randomly assigned and maintained on each of the diets for a – month period. At the end of the 3 months, each cow's milk production is recorded for a 1-week period. The numbers given in Table below are the ranks of the productivity data. Do the data provide sufficient evidence to indicate that at least one of the diets tends to achieve greater milk production than the others ? Test at the 0.05 level of significance. Diet 1 Diet 2 Diet 3 Diet 4 1 22 14 2 17 3 7 19 11 10 20 13 18 564The structure of a two-factor study can be presented as a matrix with the levels of one factordetermining the rows and the levels of the second factor determining the columns. With thisstructure in mind, describe the mean differences that are evaluated by each of the threehypothesis tests that make up a two-factor ANOVA.
- A large number of insurance records are to be examined to develop a model for predicting fraudulent claims. Of the claims in the historical database, 1% were judged to be fraudulent. A sample database is taken to develop a model, and oversampling is used to provide a balanced sample in light of the very low response rate. When applied to this sample database (total number of records, N =800), the model ends up correctly classifying 310 frauds, and 270 non-frauds. It misses 90 frauds, and classified 130 records incorrectly as frauds when they were not. a. Produce the classification matrix for the sample as it stands. b. Find the adjusted misclassification rate (adjusting for the oversampling). c. What percentage of new records would you expected to be classified as fraudulent?The MAKSI FEB UI program is considering buying a copier machine among 5 (five) types, namely the FC1, FC2, FC3, FC4 and FC5 types, where each type has different efficiency in terms of the speed of the number of pages (sheets) copied in one minute. Six staff members conducted an experiment to run each type of copier. The following data shows the number of copied pages (sheets) that can be produced in one minute according to the type of copier, 1 trial, and according to the staff assigned to run each type of copier: FC1 FC2 FC3 FC4 FC5 Staff 1 60 50 63 60 64 Staff 2 56 55 65 58 60 Staff 3 54 56 65 56 58 Staff 4 56 57 67 65 60 Staff 5 54 56 65 60 60 Staff 6 55 52 58 60 55 Some of the results of the calculation of the sum of squares (sum-square) and the average squared (mean square) required for the ANOVA test are provided in the following table: Source of Variation SS Df MS Fstat FTable CopierMachine 333.33 ……… ……… ……… ……… Staff ……….. ……… ……… ……… ……… Error 129.47 ……… ……… Total 532.67 …………The structure of a two-factor study can be presented as a matrix, with one factor determining the rows and the second factor determining the columns. With this structure in mind, identify the three separate hypothesis tests that make up a two-factor ANOVA, and explain the purpose of each test. Describe the mean differences that are evaluated by each of the three hypothesis test.
- An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and unloading riders more efficiently. Two alternative loading/unloading methods have been proposed. To account for potential differences due to the type of ride and the possible interaction between the method of loading and unloading and the type of ride, a factorial experiment was designed. Use the following data to test for any significant effect due to the loading and unloading method, the type of ride, and interaction. Use α = 0.05. Type of Ride Screaming Demon Roller Coaster Log Flume 41 54 48 Method 1 43 46 44 49 48 50 Method 2 51 44 46 Find the value of the test statistic for method of loading and unloading. Find the p-value for method of loading and unloading. (Round your answer to three decimal places.) p-value = State your conclusion about method of loading and unloading. O Because the p-value sa = 0.05, method of loading and unloading is not significant. O Because the p-value >…Chronic wasting disease is a fatal disease of deer and elk believed to be caused by transmissible prions. The origin, development, and spread of chronic wasting disease in free-ranging deer and elk populations are not well understood. One factor directly related to the control of chronic wasting disease is the incubation period in free-ranging animals. Boxplots are shown for estimates of the incubation period of chronic wasting disease in North American deer and elk between 2011 and 2016. Incubation period of chronic wasting disease in North American deer and elk 80- 70- 60- 50- 40- 30- 20- 10- 2011 2012 2013 2014 2015 2016 YearA national standard requires that public bridges over 20 feet in length must be inspected and rated every 2 years. The rating scale ranges from 0 (poorest rating) to 9 (highest rating). A group of engineers used a probabilistic model to forecast the inspection ratings of all major bridges in a city. For the year 2020, the engineers forecast that 6% of all major bridges in that city will have ratings of 4 or below. Complete parts a and b. a. Use the forecast to find the probability that in a random sample of 7 major bridges in the city, at least 3 will have an inspection rating of 4 or below in 2020. P(x≥3)=
- An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and unloading riders more efficiently. Two alternative loading/unloading methods have been proposed. To account for potential differences due to the type of ride and the possible interaction between the method of loading and unloading and the type of ride, a factorial experiment was designed. Use the following data to test for any significant effect due to the loading and unloading method, the type of ride, and interaction. Use a = 0.05. Factor A is method of loading and unloading; Factor B is the type of ride. Type of Ride Roller Coaster Screaming Demon Long Flume Method 1 49 50 47 51 42 43 Method 2 48 46 47 50 42 43 Set up the ANOVA table (to whole number, but p-value to 4 decimals and F value to 2 decimal, if necessary). Do not round intermediate calculations. Source of Variation Sum of Squares Degrees of Freedom Mean Square F p-value Factor A Factor B Interaction Error Total The p-value…Define the concept of Weighted Least Squares?An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and unloading riders more efficiently. Two alternative loading/unloading methods have been proposed. To account for potential differences due to the type of ride and the possible interaction between the method of loading and unloading and the type of ride, a factorial experiment was designed. Use the following data to test for any significant effect due to the loading and unloading method, the type of ride, and interaction. Use . Factor A is method of loading and unloading; Factor B is the type of ride. Type of Ride Roller Coaster Screaming Demon Long Flume Method 1 44 50 48 46 42 44 Method 2 50 54 46 52 50 42 Set up the ANOVA table (to whole number, but p -value to 2 decimals and F value to 1 decimal, if necessary). Source of Variation Sum of Squares Degrees of Freedom Mean Square -value Factor A Factor B Interaction…
