Your analytics professor hands back the tests from the previous exam and realizes there are several exams leftover, suggesting these students have skipped his class. He believes that their absence is caused by a poor performance on the test. If the theory is correct, the leftover papers will have lower scores than those papers handed back. He records the marks of the leftover papers with the marks of the returned papers. The professor wants to know if the group of papers he returned received a higher mark than the leftover papers. What is the best test to use

Astudy that involves interviews of adults is eligible for expedited review. the researcher wants to add an adolescent population (aged 12 to 17) to the study and has designed a parental permission and assent process. no additional changes are planned. which of the following statements about review of the revised protocol is accurate? the research would only be eligible for expedited review if the adolescents are capable of understanding the same consent forms used for the adult population.the research would only be eligible for expedited review if the adolescents have been declared to be emancipated minors.the new research would need full review by a convened irb because children are a protected population.unless the nature of the questions would raise the level of risk to > minimal for adolescents, the research would still qualify for expedited review.

Giving into indirect pressure to change your behavior or thoughts is called?

Donald is studying the eating habits of all students attending his school. he samples the population by dividing the students into groups by grade level and randomly selecting a proportionate number of students from each group. he then collects data from the sample. which type of sampling is used? select the correct answer below: systematic sampling convenience sampling stratified sampling cluster sampling