Discussion:
Q: At the time she was hired as a server at the restaurant, Beth was told, "You can average more than $20 a day in tips." Over the first 31 days she was employed, the mean daily amount of her tips was $21.76, with a standard deviation of $2.35. At the 0.01 significance level, can Beth conclude she is earning more than $20 in tips?
All five hypothesis steps and the indication on the normal curve the area of rejection