The makers of a soft drink want to identify the average age of its consumers. A sample of 25 consumers was taken. The average age in the sample was 31 years with a standard deviation of 3.5 years. The...

Extracted text: The makers of a soft drink want to identify the average age of its consumers. A sample of 25 consumers was taken. The average age in the sample was 31 years with a standard deviation of 3.5 years. The Margin of error of the 99% confidence interval for the average age of the consumers is O a. 3.11 years O b. 2.13 years O C. 1.96 years O d. 1.78 years