Janice wishes to ensure that she has equal numbers of freshmen, sophomores, juniors, and seniors in her sample. She separates the population into subpopulations according to class rank and draws random samples from each subpopulation. Janice has engaged in sampling.

Janice has engaged in stratified random sampling.

Explanation:

Stratified random sample is a research method by which the sample is random, which means is not contoled but is is stratified, which means it is organized according a certain populaton and subpopulation. She choses random sample from each subpopulation.

speed

explanation:

answer: musical connotation

leonard b. meyer (1918-2007) was an american composer, author and philosopher. his work emotion and meaning in music is perhaps the first major treatise on music. it is a philosophical and psychological work, greatly influenced by koffka (one of the major proponents of gestalt psychology). his work deals with the problem of musical meaning and musical communication.