g. What are the observed minus expected counts? h. What is the test statistic? How many degree of freedom? i. What is the critical value? What do you conclude?

The accompanying data show the number of bacteria present after a certain number of hours. Find the equation of the regression line for the data. Then construct a scatter plot of (x,y) and sketch the regression line with it. Click the icon to view the table of numbers of hours and bacteria. The equation of the regression line is y = (Round to two decimal places as needed.) X + ■

New Tab If AABG ~AKJL, find the value of x. B K x +5 A 4x - 1 J L. 20 12

You are the foreman of the Bar-S cattle ranch in Colorado. A neighboring ranch has calves for sale, and you are going to buy some calves to add to the Bar-S herd. How much should a healthy calf weigh? Let x be the age of the calf (in weeks), and let y be the weight of the calf (in kilograms). x 3 4 12 16 26 36 y 37 46 77 100 150 200 x 3 4 12 16 26 36 y 37 46 77 100 150 200 Complete parts (a) through (e), given Σx = 97, Σy = 610, Σx2 = 2397, Σy2 = 81,914, Σxy = 13,919, and r ≈ 0.999. (e) Find the value of the coefficient of determination r2. What percentage of the variation in y can be explained by the corresponding variation in x and the least-squares line? What percentage is unexplained? (Round your answer for r2 to three decimal places. Round your answers for the percentages to one decimal place.) r2 = ? explained     ?% unexplained     ?%