Randomly selected cans of Coke are measured for the amount of cola in ounces. The sample values listed below have a mean of 12.18 ounces and a standard deviation of 0.118 ounces.

Use DataDesk to find a 99% confidence interval for the mean volume of Coke in cans. Show the upper and lower bound. Round the results to two decimal places.

consulting your standard Z table

11.88 <= v <= 12.48

To find the 99% confidence interval for the mean volume of Coke in cans, we can use the formula:

Confidence Interval = sample mean ± (critical value) * (standard deviation / square root of sample size)

Step 1: Find the critical value
Since we want a 99% confidence interval, the alpha level (1 - confidence level) would be 0.01. We can use a t-distribution table or calculator to find the critical value associated with a 0.01 tail probability and the degrees of freedom (n - 1).

Step 2: Calculate the standard error
The standard error is calculated as the standard deviation divided by the square root of the sample size. The formula for standard error is:

Standard Error = standard deviation / square root of sample size

Step 3: Calculate the confidence interval
Once we have the critical value and the standard error, we can calculate the confidence interval using the formula mentioned earlier.

Let's go ahead and perform the calculations:

Step 1: Finding the critical value
Since the sample size and degrees of freedom are not provided in the question, I cannot determine the exact critical value. Please provide the sample size so that I could assist you further in calculating the confidence interval.