A hypothesis is . a. a proposed solution to observed phenomena b. a question derived from observed phenomena c. a testable explanation for observed phenomena d. generated as the final step in scientific inquiry

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.