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Linear Regression Problem:A marketing analyst is studying the relationship between the money spent on TV advertising (x) and the increase in sales (y). One study reported the following data (in $) for a particular company.Money spent on TV advertising (x) Increase in sales (y)380 550645 780360 530900 1200540 620670 800820 9101050 1400760 830800 905a. Using a software package of your choice, develop a scatterplot and determine whether a linear relationship provides a good fit to this data set.b. Using a software package of your choice, report the regression analysis results.
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The lengths of Chinese giant salamanders can be modeled by a normal distribution with a mean of 113 cm and a standard deviation of 22 cm. 1. What percent of the Chinese giant salamanders do you expect to measure between 100 and 135 cm?
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