The purpose of the two-sample t-test (MATLAB's ttest2) is:. 1. to compute the means of two samples.2. to compare the means of two samples.3. to calculate a population mean.4. to determine whether the means of two populations are likely to be different based on the values of the two samples.

Read these lines from beowulf.often scyld scefing seized mead-benches from enemytroops, from many a clan, he terrified warriors, even thoughfirst he was found a waif, best explains why the author includes this information in theexposition? a. to emphasize that a hero must learn to be fierceb. to remember the famous story of a popular heroc. to express sadness about losing the old heroesd. to see whether people still respect the old heroes