Concept explainers
In the production of printed circuit boards, errors in the alignment of electrical connections are a source of scrap. The data in the RegistrationError-HighCost contains the registration error and the temperature used in the production of circuit boards is an experiment in which higher cost material was used.
a. Construct a
b. Fit a quadratic regression model to predict registration error and state and quadratic regression equation.
c. Perform a residual analysis on the results and determine whether the regression model is valid.
d. At the 0.05 level of significance, is there a significant quadratic relationship between temperature and registration error?
e. At the 0.05 level of significance, determine whether the quadratic model is a better fir than the linear model.
f. Interpret the meaning of the coefficient of multiple determination.
g. Compute the adjusted
h. What conclusions can you reach concerning the relationship between registration error and temperature?
Trending nowThis is a popular solution!
Chapter 15 Solutions
Basic Business Statistics Student Value Edition Plus NEW MyLab Statistics with Pearson eText -- Access Card Package (13th Edition)
- Find the equation of the regression line for the following data set. x 1 2 3 y 0 3 4arrow_forwardSTER. 1. Wine Consumption. The table below gives the U.S. adult wine consumption, in gallons per person per year, for selected years from 1980 to 2005. a) Create a scatterplot for the data. Graph the scatterplot Year Wine below. Consumption 2.6 b) Determine what type of model is appropriate for the 1980 data. 1985 2.3 c) Use the appropriate regression on your calculator to find a Graph the regression equation in the same coordinate plane below. d) According to your model, in what year was wine consumption at a minimum? A e) Use your model to predict the wine consumption in 2008. 1990 2.0 1995 2.1 2000 2.5 2005 2.8arrow_forwardThe regional transit authority for a major metropolitan area wants to determine whetherthere is a relationship between the age of a bus and the annual maintenance cost. A sampleof ten buses resulted in the following data: a. Develop a scatter chart for these data. What does the scatter chart indicate about therelationship between age of a bus and the annual maintenance cost?b. Use the data to develop an estimated regression equation that could be used to predictthe annual maintenance cost given the age of the bus. What is the estimated regressionmodel?c. Test whether each of the regression parameters b0 and b1 is equal to zero at a 0.05level of significance. What are the correct interpretations of the estimated regressionparameters? Are these interpretations reasonable?d. How much of the variation in the sample values of annual maintenance cost does themodel you estimated in part b explain?e. What do you predict the annual maintenance cost to be for a 3.5-year-old bus?arrow_forward
- A researcher is interested in examining the relationship between spousal abuse and child abuse. Specifically, they are interested in determining whether there is a predictive relationship between spousal abuse and child abuse in 5 county social services offices. Calculate the linear regression line for the following data. Note you have already calculated the first step to this analysisarrow_forwardCompute in Excel. Use the given dataset.*note: Gender takes on a value of 1 if the student is male, and 0 otherwise Estimate a linear regression model relating overall grade weighted average (OGWA) of student to their gender, available internet speed (mbps) and previous term’s grade weighted average (lgwa)a. Interpret the slope coefficients (discuss their values and statistical significance)b. Are the coefficients jointly statistically significant? Explain your answer.c. How much of the variability of the overall grade weighted average is explained by the variability of the model?arrow_forwardCreate a residual plot and comment on the appropriateness of the model.arrow_forward
- Algebra and Trigonometry (MindTap Course List)AlgebraISBN:9781305071742Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage LearningAlgebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
- Calculus For The Life SciencesCalculusISBN:9780321964038Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.Publisher:Pearson Addison Wesley,Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillFunctions and Change: A Modeling Approach to Coll...AlgebraISBN:9781337111348Author:Bruce Crauder, Benny Evans, Alan NoellPublisher:Cengage Learning