If utilizing the 99% Confidence Interval for a general population of 30.6, a random sampling of 25 with a mean of 39.5 and a standard deviation of 6.6 what steps do I take to find the critical value to be used for this calculation and to determine the interval?

This is a question worded 100% by me. I don’t know how else to word the problem. I am looking for the values to complete the equation. _____ < m < _______

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