A research and development specialist for a company that produces a certain soft drink wants to determine

A research and development specialist for a company that produces a certain soft drink wants to determine if a 12-ounce can of a certain brand of soft drink contains 120 calories as the labeling indicates.
Using a random sample of 9 cans, the specialist determined that the average calories per can is 124 with a standard deviation of 6 calories.
At the .05 level of significance, is there sufficient evidence that the average calorie content of a 12-ounce can is different from 120 calories? Assume that the number of calories per can is normally distributed.