Check my work 3 Exercise 3-25 Static 3 A researcher at a marketing firm examines whether the age of a consumer matters when buying athletic clothing. Her initial feeling is that Brand A attracts a younger customer, whereas the more established companies (Brands B and C) draw an older clientele. For 600 recent purchases of athletic clothing, she collects data on a customer's age (Age equals 1 if the customer is under 35, 0 otherwise) and the brand name of the athletic clothing (A, B, or C). A portion of the data is shown in the accompanying table. points X 03:41:09 Purchase Skipped Age 1 1 Brand A 2 600 0 B eBook Print picture Click here for the Excel Data File References a-1. Construct a contingency table that cross-classifies the data by Age and Brand. Provide the frequencies in the accompanying table. Brand C Age 2 35 years old (0) 35 years old (1) a-2. How many of the purchases were for Brand A? Ches 3 Number of purchases for Brand A 3 points a-3. How many of the purchases were from customers under 35 years old? 8 03:41:01 Skipped Number of purchases under 35 years old eBook Print References b-1. Given that the customer was younger than 35 years old, what is the likelihood that the customer purchased Brand A? (Report the proportion rounded to 2 decimal places.) Likelihood that the customer purchased Brand A b-2. Given that the customer was younger than 35 years old, what is the likelihood that the customer purchased Brand B? (Report the proportion rounded to 2 decimal places.) Likelihood that the customer purchased Brand B 3 c. The figure below shows the stacked column chart for the data. 250 3 points 200 03:40:41 150 Skipped 1 Younger than 35 years old At least 35 years old 100 eBook Print 50 References A B Which of the following statements is least accurate? Brand A had the most purchases. Of those who purchased Brand A, those younger than 35 years old made a majority of the purchases. Of those who purchased Brand B, those at least 35 years old made a majority of the purchases. Brand C had the least purchases. Check my work 3 Exercise 3-25 Static 3 A researcher at a marketing firm examines whether the age of a consumer matters when buying athletic clothing. Her initial feeling is that Brand A attracts a younger customer, whereas the more established companies (Brands B and C) draw an older clientele. For 600 recent purchases of athletic clothing, she collects data on a customer's age (Age equals 1 if the customer is under 35, 0 otherwise) and the brand name of the athletic clothing (A, B, or C). A portion of the data is shown in the accompanying table. points X 03:41:09 Purchase Skipped Age 1 1 Brand A 2 600 0 B eBook Print picture Click here for the Excel Data File References a-1. Construct a contingency table that cross-classifies the data by Age and Brand. Provide the frequencies in the accompanying table. Brand C Age 2 35 years old (0) 35 years old (1) a-2. How many of the purchases were for Brand A? Ches 3 Number of purchases for Brand A 3 points a-3. How many of the purchases were from customers under 35 years old? 8 03:41:01 Skipped Number of purchases under 35 years old eBook Print References b-1. Given that the customer was younger than 35 years old, what is the likelihood that the customer purchased Brand A? (Report the proportion rounded to 2 decimal places.) Likelihood that the customer purchased Brand A b-2. Given that the customer was younger than 35 years old, what is the likelihood that the customer purchased Brand B? (Report the proportion rounded to 2 decimal places.) Likelihood that the customer purchased Brand B 3 c. The figure below shows the stacked column chart for the data. 250 3 points 200 03:40:41 150 Skipped 1 Younger than 35 years old At least 35 years old 100 eBook Print 50 References A B Which of the following statements is least accurate? Brand A had the most purchases. Of those who purchased Brand A, those younger than 35 years old made a majority of the purchases. Of those who purchased Brand B, those at least 35 years old made a majority of the purchases. Brand C had the least purchases