Hayley is at the beach. She applies sunscreen to her skin to protect it from which energy from the Sun? visible light
infrared radiation
ultraviolet radiation
thermal energy

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.