If we were to classify the pure substance represented by the lewis dot structure seen here, we would classify it as a(n) a) element. b) compound. c) element and ion. d) compound and molecule.

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.