1. A new weight loss program claims that after 6 months, 40% of obese adults will lose 25 pounds, 20% percent of overweight adults will lose 25 pounds and then 1 % of normal weight adults will lose 25 pounds. A researcher in Memphis, Tennessee collects a sample of 250 adults aged 30-79 years and puts them on this weightless program.

Based on the information provided above, if the researcher wants to determine if the claim of the program is accurate, what type of chi-square testwill she need to perform and why?