You want to know if college students have more stress in their daily lives than the general popul...

You want to know if college students have more stress in their daily lives than the general population (μ = 12), so you gather data from 25 people to test your hypothesis. Your sample has an average stress score of X̅ = 13.11 and a standard deviation of s = 3.89. Use a 1-sample t-test to see if there is a difference.