a. Use the points (0, 46,200) and (5, 54,400) to determine a linear function, f, that approximates the average sales price of a new single-wide x years after 2014. f(x) = Type your answer here (Do not enter any commas or blank spaces in your answer.) %3D b. The slope of the linear function is m = Type your answer here and means that the average sales price of a new single-wide home in the United States is Type your answer here (increasing/decreasing) by $ Type your answer here each year after 2014. c. Use your linear model to predict the average sales price on a new single-wide manufactured home in the United States in 2025. The average sales price in 2025 is $ Type your answer here

a. Use the points (0, 46,200) and (5, 54,400) to determine a linear function, f, that approximates the average sales price of a new single-wide x years after 2014. f(x) = Type your answer here (Do not enter any commas or blank spaces in your answer.) %3D b. The slope of the linear function is m = Type your answer here and means that the average sales price of a new single-wide home in the United States is Type your answer here (increasing/decreasing) by $ Type your answer here each year after 2014. c. Use your linear model to predict the average sales price on a new single-wide manufactured home in the United States in 2025. The average sales price in 2025 is $ Type your answer here

Name: 13/28 answeredentFill in the BlanksAverage Sales Price of New Single
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Description: 13/28 answeredentFill in the BlanksAverage Sales Price of New Single WideManufactured Homes in the United States55,00054,000(5, 54,400)53,00052,00051,00050,00049.00048,00047,00046,00045,00010, 46,2002Years after 2014Type your answers in all of the b

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015

1st Edition

ISBN:9781680331141

Author:HOUGHTON MIFFLIN HARCOURT

Publisher:HOUGHTON MIFFLIN HARCOURT

Chapter11: Data Analysis And Displays

Section: Chapter Questions

Problem 10CT

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William Profit is studying companies going public for the first time. He isparticularly interested in the relationship between the size of the offering and theprice per share. A sample of 15 companies that recently went public revealed the following information: y x 10.8 9 11.3 94.4 11.2 27.3 11.1 179.2 11.1 71.9 11.2 97.9 11 93.5 10.7 70 11.3 160.7 10.6 96.5 10.5 83 10.3 23.5 10.7 58.7 11 93.8 10.8 34.4
A) What is the purpose of the “callout bubble” in the bottom right-hand corner of the graph, showing a tiny red square inside the yellow square? Why do you suppose the author felt the need to use a callout bubble? B) Data from this source show that the rate of symptomatic infection with COVID for people who have been vaccinated is about 100 infections per 102,000 vaccinations. As of July 30, 2021, data show that164,000,000 Americans have been fully vaccinated. How many of these vaccinated Americans would be expected to become infected with COVID and display symptoms? C) Data from this source show that the rate of death from COVID for people who have been vaccinated is about 1 death per 102,000 vaccinations. As of July 30, 2021, data show that 164,000,000 Americans have been fully vaccinated. How many of these vaccinated Americans would be expected to die from COVID?
Shah Rukh Khan is studying companies going public for the first time. He is particularly interested in the relationship between the size of the offering and the price per share. A sample of 15 companies that recently went public revealed the following information. Company Size ($ millions), X Price per Share, Y 1 9.0 10.8 2 94.4 11.3 3 27.3 11.2 4 179.2 11.1 5 71.9 11.1 6 97.9 11.2 7 93.5 11.0 8 70.0 10.7 9 160.7 11.3 10 96.5 10.6 11 83.0 10.5 12 23.5 10.3 13 58.7 10.7 14 93.8 11.0 15 34.4 10.8 Is the relationship between the size of the offering and the price per share significant, if the level of significance is 2.5%? What is the coefficient of determination? The coefficient of determination is_________ ; The relationship between the size of the offering and the price per share is For coefficient of determination, leave your answer in 3 decimal…
Isle Royale, an island in Lake Superior, has provided an important study site of wolves and their prey. Of special interest is the study of the number of moose killed by wolves. In the period from 1958 to 1974, there were 296 moose deaths identified as wolf kills. The age distribution of the kills is as follows;Age of Moose in Years Calf (0.5 yr)1-56-1011-1516-20 Number Killed By Wolves1065179546 (a) For each age group, compute the probability that a moose in that age group is killed by a wolf. (Round your answers to three decimal places.)0.5 1-5 6-10 11-15 16-20 (b) Consider all ages in a class equal to the class midpoint. Find the expected age of a moose killed by a wolf and the standard deviation of the ages. (Round your answers to two decimal places.)μ = σ =
15. For several years researchers have noticed that thereappears to be a regular, year-by-year increase in theaverage IQ for the general population. Thisphenomenon is called the Flynn effect after theresearcher who first reported it (Flynn, 1984, 1999),and it means that psychologists must continuouslyupdate IQ tests to keep the population mean at 100. To evaluate the size of the effect, aresearcher obtained a 10-year-old IQ test that wasstandardized to produce a mean IQ of 100 for thepopulation 10 years ago. The test was then given to asample of n 64 of today’s 20-year-old adults. Theaverage score for the sample was M 107 with astandard deviation of s 12.a. Based on the sample, is the average IQ for today’spopulation significantly different from the average10 years ago, when the test would have producesa mean of 100? Use a two-tailed test with.01.b. Make an 80% confidence interval estimate oftoday’s population mean IQ for the 10-year-old test.
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q3 The following data represent the net profits made by a sample of 25 companies that operate in real-state sector. 56 97 78 61 79 93 84 76 58 92 89 96 42 44 85 77 53 88 62 84 62 82 75 95 89 Choose the best graphical presentation and justify your Based on your answer in (1), construct the selected graphical presentation and comment on the Based on your answer in (2), do you think the sector performance is satisfactory? Justify your answer.
A process manufactures plastic tapes in batches of 50 units (tapes). The inspection records of the last 30 batches produced during one week individually by 30 workers of this process revealed the following results: (IMAGE) The production supervisor, will award a prize to the most outstanding worker of the week and in addition a party will be given in his honor. a) Draw a graph of worker vs. % of non-conforming product. b) What is the average quality level of the week obtained by the workers in this process? c) To whom should the award be assigned?Who was the best worker? Who was the worst worker? d) What would you do to improve the results of this process?
With the growth of internet service providers, a researcher decides to examine whether there is a correlation between cost of internet service per month (rounded to the nearest peso) and degree of customer satisfaction (on a scale of 10 - 100 with a 10 being not at all satisfied and a 100 being extremely satisfied). The researcher only includes programs with comparable types of services. A sample of the data is provided below. d. Using your equation, estimate the satisfaction of the customer if the cost is P1175 per month. Ans = Blank 5 e. Using your equation, estimate the satisfaction of the customer if the cost is P245 per month. Ans = Blank 6
Laureysens, et al. (2004) studied the concentration of aluminum in wood from a number of clones of poplar growing in an area with heavy pollution. The same clone was sampled and tested once in August and again in November. The researchers believed that the concentration of aluminum would be shown to be increasing over time and hence higher in November than in August. The following table gives the aluminum concentrations for twelve of the clones. Clone 1 2 3 4 5 6 7 8 9 10 11 12 Aug. 8.1 10.0 16.5 13.6 9.5 8.3 18.3 13.3 7.9 8.1 8.9 13.4 Nov. 11.2 16.3 15.3 15.6 10.5 15.5 12.7 11.1 19.9 20.4 14.2 36.8 Diff. 3.1 6.3 1.2 2.0 1.0 7.2 5.6 2.2 12.0 12.3 5.3 23.4 The data are to be analyzed using the Wilcoxon signed rank test. H0: Values of aluminum concentrations in the 2 months have the same distribution. Ha: Values of aluminum concentrations are systematically larger in November than in August. Fix α = 0.05 What is the observed value of the statistic W+ used for the test of hypotheses?…
Marine biologists have noticed that the color of the outermost growth band on a clam tends to be related to the time of year in which the clam dies. A biologist conducted a small investigation of whether this is true for the species Protothaca staminea. She collected a sample of 50 clam shells in February and 27 clam shells in March. 15 of the shells from February had a dark color on the outermost growth band, whereas 8 of the shells from March had a dark color on the outermost growth band. Carry out a hypothesis test to see if there is a difference in the proportion of shells with a dark outermost growth band between the two months. The point estimate for the true difference in proportion of dark growth bands between February and March is:
Marine biologists have noticed that the color of the outermost growth band on a clam tends to be related to the time of year in which the clam dies. A biologist conducted a small investigation of whether this is true for the species Protothaca staminea. She collected a sample of 50 clam shells in February and 27 clam shells in March. 15 of the shells from February had a dark color on the outermost growth band, whereas 8 of the shells from March had a dark color on the outermost growth band. Carry out a hypothesis test to see if there is a difference in the proportion of shells with a dark outermost growth band between the two months. Let ? = 0.01. A) The point estimate for the true difference in proportion of dark growth bands between February and March is: