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Two sample intervals for means

Jenny wants to compare the amount of weight that people lose at her gym using two popular, non-overlapping weight-loss programs, Shred It and Burn It. She begins by randomly sampling 3535 of the approximately 100100 people who used Shred It and finds that their average weight loss was 1010  kg\text{ kg} with a standard deviation of 3.53.5  kg\text{ kg}. She then randomly samples 3535 of the approximately 100100 people who used Burn It and finds that their average weight loss was 77  kg\text{ kg} with a standard deviation of 5.75.7  kg\text{ kg}. Jenny then uses this information to construct a confidence interval estimate for the difference in the average amount of weight that people lose at her gym using the two weight-loss programs.
Which statement about Jenny’s confidence interval is true?
Choose 1 answer:
Choose 1 answer: