3) A psychologist is using participants generated through an on-line subject pool. All of her participants are supposed to be currently attending a university. A demographic question that she asks is what proportion of the total credits that they need for graduation has each participant earned. This information is listed below. She has been told that the on-line subject pool generally separates by amount of credits earned in the way that is indicated. Using a Chi square goodness of fit test determine if her 250 subjects represent the population of the on-line subject pool on this particular measurement. Make sure to explain what conclusion she could draw. Credits towards graduation earned Subject pool Her sample 25% or less 30% 85 25-50% 50-75% 75% or more 30% 25% 15% 70 60 35