Determine whether the study depicts an observational study or an experiment. Thirty university students are divided into two groups. One group receives free tutoring in mathematics, the other doesn't. After one semester, scores on final mathematical examinations are compared. Does the description correspond to an observational study or an experiment? O A. The study is an experiment because the study examines individuals in a sample, but does not try to influence the variable of interest. OB. The study is an experiment because the researchers control one variable determine the effect on the response variable. OC. The study is an observational study because the study examines individuals in a sample, but does not try to influence the response variable. O D. The study is an observational study because the researchers control one variable to determine the effect on the response variable.

Determine whether the study depicts an observational study or an experiment. Thirty university students are divided into two groups. One group receives free tutoring in mathematics, the other doesn't. After one semester, scores on final mathematical examinations are compared. Does the description correspond to an observational study or an experiment? A. The study is an experiment because the study examines individuals in a sample, but does not try to influence the variable of interest B. The study is an experiment because the researchers control one variable to determine the effect on the rfsponse variable. C. The study is an observational study because the study examines individuals in a sample but does not try to influence the response variable D. The study is an observational study because the researchers control one variable to determine the effect on the response variable Marigold's Market recorded the following events involving a recent purchase of merchandise: Received goods for $52000, terms 1/10,n/30. Returned $1200 of the shipment for credit. Paid \$300 freight on the shipment. Paid the invoice within the discount period. As a result of these events, the company sinventory increased by $51100. $50592. $50292. $50586