c. ScienceScore(x) 3 5 11 16 20 Frequency(f) 2 4 7 4 3
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This isGROUPED data
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- The shares of the U.S. automobile market held in 1990 by General Motors, Japanese manufacturers, Ford, Chrysler, and other manufacturers were, respectively, 36%, 26%, 21%, 9%, and 8%. Suppose that a new survey of 1,000 new-car buyers shows the following purchase frequencies: GM Japanese Ford Chrysler Other 193 384 170 90 163 Click here for the Excel Data File (a) Show that it is appropriate to carry out a chi-square test using these data. (b) Determine whether the current market shares differ from those of 1990. Use α = .05. (Round your answer to 3 decimal places.)A university database contains the following information about eachstudent – their full name, their student ID number (a randomly assigned 8-digit number), their date of birthday, their sex, their age and the year they joined the university. Identify which data-type each attribute belongs to, and explain your answer.A sales manager collected the following data on annual sales for new customer accounts and the number of years of experience for a sample of 10 salespersons. Salesperson Years ofExperience Annual Sales($1,000s) 1 1 80 2 3 97 3 4 92 4 4 102 5 6 103 6 8 111 7 10 119 8 10 123 9 11 117 10 13 136 (a) Develop a scatter diagram for these data with years of experience as the independent variable. A scatter diagram has 10 points plotted on it. The horizontal axis ranges from 0 to 14 and is labeled: Years of Experience. The vertical axis ranges from 50 to 150 and is labeled: Annual Sales ($1,000s). The points are plotted from left to right in an upward, diagonal direction starting from the lower left corner of the diagram and are between 1 to 13 on the horizontal axis and between 75 to 135 on the vertical axis. The points are fairly close together. A scatter diagram has 10 points plotted on it. The horizontal axis ranges from 0 to 14 and is labeled: Years of…
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