Answer:
Jamie should look at the difference in results in the two groups of people.
Explanation:
According to the question, two groups are being studied in which the one group is taking the food according to the new diet plan and the other group is taking a simple low-carbohydrate diet. So, for having full confidence in its scientific reliability, Jamie should look that the people taking pre-packaged meals as per the new diet plan are getting better results or not than the people who are taking low carbohydrate diet. If she gets a result in which it is found that new diet plan is giving a positive health benefit to the people then this new plan is scientifically reliable.
