A dog food manufacturer is considering two different food formulations, A and B, for a new, low-carb alternative. A sample of 100 dogs was randomly selected and fed with Formulation A, and after a month, Sample A showed a sample mean weight 34.5 lb with a standard deviation 2.8 lb. Another sample of 100 dogs was randomly selected and fed with Formulation B, and after a month, Sample B showed a sample mean weight 33.7 lb with a standard deviation 3.5 lb. Obtain the 95% confidence interval for the difference between the two population means. Which formulation should result in a lower average weight? O [-0.084 , 1.684]. No significant difference. [-0.084 , 1.684]. Formulation B. [0.235 , 1.365]. No significant difference. [0.235 , 1.365]. Formulation B