To verify the accuracy in an EXCEL format (i.e., quicker calculations), determine the following as per the enclosed image provided for educational purposes:

The heights (in inches) of 20 randomly selected adult males are listed below. Construct a 99% confidence interval for the variance, o2. 70 72 71 70 69 73 69 68 70 71 67 71 70 74 69 68 71 71 71 72