9 4 points A researcher is designing a study that examines the effect of a low - calorie diet combined with exercise on overall weight loss in sedentary , overweight individuals They plan to include 1 experimental group that will be consuming 1000 calories per day in addition to performing a moderate exercise program 5 days per week and 1 control group who will not have any calorie restrictions or workout plan . They will measure body weight at baseline ( day ) and again after 3 months . a . Should the researcher use a Two - Tailed Hypothesis Test or a One - Tailed Hypothesis Test ? Justify your answer for full credit . ( 2 pts ) b . At the significance level of 0.05 , the statistical results showed a p - value of 0.02 for weight loss between groups for the data after all subjects completed the study . How would you interpret these results ? ( 2 pts )