A manufacturer wants to assess if her new weight-loss cat food is effective. She has two groups of 20 adult cats that are overweight. Group 1 receives two servings of her companies regular adult...

Here's the multiple choice:

Paired 1- tailed t-test

paired 2- tailed t- test

unpaired 1-tailed t-test

unpaired 2- tailed t- test

Extracted text: A manufacturer wants to assess if her new weight-loss cat food is effective. She has two groups of 20 adult cats that are overweight. Group 1 receives two servings of her companies regular adult formula food, while Group 2 receives two servings of her new weigh-loss formula. The table below presents the weight loss the cats experienced over the duration of the experiment. Sample Regular Weightloss 2 1 3 1 1 2 2 8. 2 2 2 5 5 11 5 12 1 2 13 1 14 15 16 2 17 18 2 19 20 5 What kind of t-test should be performed to determine if the weigh-loss formula resulted in greater weight loss than the standard formula cat food? 4. 2.