thirty-five math majors, 23 music majors and 65 history majors are randomly selected from 586 math majors, 224 music majors and 254 history majors at the state university. what sampling technique is used?

Simple random sampling

Step-by-step explanation:

Simple random sampling is a technique of sampling in which an experimenter selects the group of samples or subjects randomly from a large group of population. Each sample is chosen randomly by chance and each entity of a population has equal possibility of being selected as sample.

According to the given situation, simple random sampling is the technique that should be used for sampling.

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify