### Calculating degrees of freedom, t-tests and critical values

Suppose that a one-tailed t-test is being applied to find out if the population mean is less than $212. The level of significance selected is 0.01 and 26 accounts are sampled. What is the critical value? A machine is set to fill the small size packages of M&M candies with 56 candies per bag. A sample revealed: 3 bags of 5