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Question 9 0 out of 1 points A state charges sales tax of 6% on the price of sales of all the items. For example of the marked price of an item is $60, the post sales price is 1.06*60=$63.60 Write the correlation coefficient between price of an item and its post sales price. Question 10 0 out of 1 points The following display shows a relation between the weights (in Lb.) and its mileage (miles per gallon) for 19 different cars. Write the correlation between the weight of a car and its mpg. Round to two digits after the decimal sign. 40 y = -0.0067x+ 51.002 R2 = 0.6273 35 30 Miles per Gallon 25 20 15 2000 2500 3000 3500 4000 4500 5000 Weight in poundsQuestion 5 0 out of 1 point The following graph shows a scatter plot and the line of best fit between student/faculty ratio and alumni giving rate for 48 private universities. 60 50 40 Alumni Giving Rate 30 20 10 10 15 20 Student/Faculty Ratio picture A summary statistics for the two variables is below. Variable N N* Mean SE Mean StDev Minimum Median Student/Faculty Ratio 48 0 11 . 542 0. 700 4. 851 3. 000 8. 000 10.500 Alumni Giving Rate 48 0 29.27 1.94 13.44 7.00 18.25 29.00 Variable Q3 Maximum Student/Faculty Ratio 14.500 23. 000 Alumni Giving Rate 39.50 67.00 correlation of Student/Faculty Ratio and Alumni Giving Rate = -0. 742 Find the slope of the line of best fit, round the answer to two digits after the decimal sign