A major exam company retains the ACT scores for all test takers for the last year. The mean composite ACT score for last year was 23 with a standard deviation of 5.6. (3 pts)a. If we were to create a sampling distribution from this data with repeated samples of 30 exams from the data, what would the shape, mean, and standard deviation of distribution be

Stu and ambrose are working together on a study of whether diet is related to students' mental health. first, they randomly select 10 students from the student center and 10 students from the office of counseling and psychological services. then, they ask students to rate their diet in terms of healthiness on a scale of 1-100 before completing a 20-item mental health survey. a) name one of the constructs being studied b) how was the construct you named above operationally defined in this experiment? e) was the variable you described above their independent variable, their dependent variable, or a controlled variable? d) what is a confounding variable? what is a potential confound in this study?