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##### MAT201 MODULE 5 CASE

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Question;1.;Find the equation of the regression line for the given data.;X: -7, -2, 5, 1, -1, -2, 0, 2, 3, -3;Y: -12, -8, 9, 1, -5, -6, -1, 4, 7, -8;What is the predicted value of Y when X = -2?;What is the predicted value of Y when X = 4?;2.;The data below are the final exam scores of 10 randomly selected statistics;students and the number of hours they studied for the exam. Find the equation;of the regression line for the given data..;Hours;(X): 3, 5, 2, 8, 2, 4, 4, 5, 6, 3;Score (Y);75, 90, 70, 98, 76, 88, 95, 99, 98, 81;Predict the final exam score for students who;studied 4 hours;Predict the final exam score for students who studied;6 hours.;3.;Find the correlation coefficient between X and Y.;X: -5, -3, 4, 1, -1, -2, 0, 2, 3, -4;Y: -9, -7, 8;2, -3, -5, -2, 4, 7, -7;Is there a weak or strong, positive or negative;correlation between X and Y?;4.;A pharmaceutical company tested two new flu vaccines intended to boost;immunity. In order to test the effectiveness of this drug, a one year study was;done were at the beginning of the year three groups of eight individuals were;given either Flu Shot 1, Flu Shot 2, or a placebo (a shot with only saline and;no vaccine). The number of sick days from work each individual took was;carefully recorded over the following year. Both flu shots were found to be;completely safe with no side effects, but differed in terms of effectiveness.;The data below gives the number of sick days for the individuals in each of the;three groups.;Perform;a one-way ANOVA analysis, testing at the 0.05 level. Also, calculate the mean number of sick days;for each group. Describe your results.;Group Sick days per year;Placebo: 7, 4, 6, 8, 6, 6, 2, 9;Flu;Shot 1: 5, 3, 3, 5, 4, 7, 3, 3;Flu Shot 2: 2;4, 1, 2, 2, 1, 2, 5;But;equally important, also explain what you would do if you owned your own;company. Would you pay for your;employers to receive Flu Shot 1 or Flu Shot 2 in order to keep their number of;sick days down? If so, which one would;you choose? Would you choose either;vaccine only if it was very cheap or would you be willing to invest a lot into;the vaccine for your employees? Explain;your reasoning

Paper#60482 | Written in 18-Jul-2015

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