dow Help 31% www-awu.aleks.com C AcGraw-Hill Campus - Introduction to Statistics MTH-107-... McGraw-Hill Education Campus CORRELATION AND SIMPLE LINEAR REGRESSION Performing a simple linear regression Olivia v Espanol You are the owner of Fast Break, a popular local place that sells drinks, snacks, and sandwiches. For inventory management purposes, you are examining how the weather affects the amount of hot chocolate sold in a day. You are going to gather a random sample of 7 days showing that day's high temperature (denoted by x, in "C) and the amount of hot chocolate sold that day (denoted by y, in liters). You will also note the product ry of the temperature and amount of hot chocolate sold for each day. (These products are written in the row labeled "my")- a) Click on "Take Sample" to see the results for your random sample. High temperature, x 15 24 (in .C) Amount of hot Take Sample chocolate sold, > 12 15 (in liters) 108 210 144 84 195 Send data to calc... v Based on the data from your sample, enter the indicated values in the column on the left below. Round decimal values to three decimal places. When you are done, select "Compute". (In the table below, , is the sample size and the symbol > xy means the sum of the values xy.) Sample correlation coefficient (r Slope ( 1 E xy : D x-intercept ('g) Compute (b) Write the equation of the least-squares regression line for your data. Then on the scatter plot for your data, graph this regression equation by plotting two points and then drawing the line through them. Round each coordinate to three decimal places Regression equation:; -O of hot chocolate sold (in liters) Explanation Check . ..low Help awww-awu.aleks.com Graw-Hill Campus - Introduction to Statistics MTH-107-... McGraw-Hill Education Campus C CORRELATION AND SIMPLE LINEAR REGRESSION Performing a simple linear regression -0OOD 0 Olivia v symbol > xy means the sum of the values ry.) Espan X 5 Sample correlation coefficient () y: D Slope (b1 ): Exy : 0 y-intercept (bo): Compute b) Write the equation of the least-squares regression line for your data. Then on the scatter plot for your data, graph this regression equation by plotting two points and then drawing the line through them. Round each coordinate to three decimal places. Regression equation: y = ! (in liters) Amount of hot chocolate sold High temperature (in c) (c) Use your regression equation to predict the amount of hot chocolate sold on a day with a high temperature of 19 C. Round your answer to the nearest whole number. Predicted amount of hot chocolate sold: I liters Explanation Check EO