Read this section and answer the question that follows:

You were told that the average number of calories in a low-calorie meal is 450.Your friend started making low-calorie meals at her restaurant.You took a sample of 27 such meals and the mean for these meals is 440 and the standard deviation is 22 calories. But now, your friend told you that she is sure that her meals have fewer calories. You do the test again. Use =.05.

Question:

Should you reject the null hypothesis in this situation?

Group of answer choices

b. No

a. Yes