A.-3.79+0.897x B. y=-2.79+0.897x C. y=-3.79 0.801x D. y=-2.79+0.950x Time Remaining: 01:49:56 Next 12:06 PM CI

The arm span and foot length were both measured (in centimeters) for each of 20 students in a biology class. The computer output displays the regression analysis.   Which of the following is the best interpretation of the coefficient of determination r2? About 37% of the variation in arm span is accounted for by the linear relationship formed with the foot length. About 65% of the variation in foot length is accounted for by the linear relationship formed with the arm span. About 63% of the variation in arm span is accounted for by the linear relationship formed with the foot length. About 63% of the variation in foot length is accounted for by the linear relationship formed with the arm span.

The money raised and spent (both in millions of dollars) by all congressional campaigns for 8 recent 2-year periods are shown in the table. The equation of the regression line is y = 0.911x +48.495. Find the coefficient of determination and interpret the result. Money raised, x 463.9 657.2 730.4 790.5 777.9 1038.8 969.8 1222.5 Money spent, y 445.3 686.8 730.2 759,3 740.3 1007.6 926.5 1151.8 Find the coefficient of determination and interpret the result. (Round to three decimal places as needed.) How can the coefficient of determination be interpreted? O A. The coefficient of determination is the fraction of the variation in money spent that can be explained by the variation in money raised. The remaining fraction of the variation is unexplained and is due to other factors or to sampling error. O B. The coefficient of determination is the fraction of the variation in money spent that is unexplained and is due to other factors or sampling error. The remaining fraction of the variation is…

The money raised and spent (both in millions of dollars) by all congressional campaigns for 8 recent 2-year periods are shown in the table. The equation of the regression line is y = 0.958x+7.214. Find the coefficient of determination and interpret the result. Money raised, 471.5 666.3 732.7 X Money spent, y 441.1 677.4 729.8 750.1 726.6 1000.7 937.7 1165.2 Find the coefficient of determination and interpret the result. r2 = (Round to three decimal places as needed.) How can the coefficient of determination be interpreted? O A. The coefficient of determination is the fraction of the variation in money spent that can be explained by the variation in money raised. The remaining fraction of the variation is unexplained and is due to other factors or to sampling error. OB. The coefficient of determination is the fraction of the variation in money spent that is unexplained and is due to other factors or sampling error. The remaining fraction of the variation is explained by the variation in…

The data show the number of viewers for television stars with certain salaries. Find the regression equation, letting salary be the independent (x) variable. Find the best predicted number of viewers for a television star with a salary of $6 million. Is the result close to the actual number of viewers, 2.9 million? Use a significance level of 0.05

Use the given data to find the equation of the regression line. Round the final values to three places, if necessary. (1, 6), (3, 4), (5, 2) O = -2.79 + 0.897x O ý = 1.0 + 1.0x O ý = 7.0 - 1.0x O ý = -3.79 + 0.801x

The scatter plot and table show the number of grapes and blueberries in 10 fruit baskets. Use the two data points closest to the line. Which equation is the equation of the regression line? Blueberries O y = 28 24 20 16 12 O y= 8 4 0 Number of Grapes and Blueberries Grapes 38 48 54 32 20 36 24 30 44 50 Blueberries 12 16 18 18 8 16 12 9 15 23 0y=x+ ○ y=x+13 4 812 16 20 24 28 32 36 40 44 48 52 56 Grapes +

Suppose the equation of the regression line for the number of emails a person recieves at a particular sales company is given by y = 11 + 12x. Where y is based on the number of accounts the person has, c. If a person has 8 accounts, find the number of emails they will recieve. Number of emails: Enter an integer or decimal number [more..] Question Help: Message instructor

choose the correct answer Given a regression equation, y = 17.43 + 8.12x,  where x represents the number of years and y represents the number of members. Predict the number of members  after 12 years from the start . a. 122 membersb. 98 membersc. 91 membersd. 115 members

Find the equation of the regression line for the given data. Then construct a scatter plot of the data and draw the regression line. The table shows the shoe size and heights (in.) for 6 men. Shoe size, x Height, y 7.5 8.5 9.5 12.0 13.0 13.5 65.0 67.0 72.0 74.0 74.0 72.0 Find the regression equation. シー+D (Round to three decimal places as needed.) Choose the correct graph below. OA. В. C. OD. 75- 75- 65- 65- 65-4 65 He 14 14 14 Shoe size Shoe size Shoe size Shoe size Height (in.) O 回 Height (in.) Height (in.) O 包 Height (in.)