I need help with these questions:

The relationship between reliability andSEmis that

A, if reliability increasesSEmincreases.

B. if reliability is positiveSEmis positive.

C. if reliability is positiveSEmis negative.

D. if reliability increasesSEmdecreases.

A coach running numerous training camps over the summer is interested in whether it is better to distribute practices into four sessions instead of two sessions daily. You have several hundred possible participants distributed at training camps in multiple schools throughout multiple districts. Which of the following is the best possible sampling strategy to use if you are interested in generalizability?

A, Intensity sampling

B. Multistage sampling

C. Snowball sampling

D. Quota sampling

Peggy is conducting a reading intervention study that involves many children in many classrooms in many schools. The intervention is delivered by the teacher to the entire classes. Peggy would like to use a random sampling approach. Which of the following is Peggy likely to consider?

A. Systematic sampling

B. Simple random sampling

C. Multistage sampling

D. Purposive random sampling