When orange fish and white fish are mated, all the offspring have orange and white stripes. if a striped fish and orange fish mate, what is the probability they will have a white offsping?

Aresearcher created three groups based on participants bmi: normal weight, overweight and obese. the hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. which statistical test might the researcher use, assuming a reasonably normal distribution of values.