Apretest of knowledge about microcomputers is given to a group of students 5 min prior to a filnm on the subject. a posttest given 10 min after the film showed a 10-point gain from the pretest. the researcher concludes that the film produced the gain. which of the following is likely the threat to internal validity?

a. statestical regression
b. selection bias
c, testing
d. maturation

a: 1/6, j: 1/4

step-by-step explanation: you are welcome

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (

answer:

your answer is: c. 196 7/8 in^3.

what is the answer to this