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Graded AssignmentUnit Test, Part 2Answer the questions, using complete sentences. When you have finished, submit this assignment to your teacher by the duedate for full credit.(9 points)1.An experiment was devised to investigate the effects on the temperature of a cup ofcoffee when cream is added at different time intervals. Hot and cold water were usedinstead of coffee and cream. First, a container of water heated to 80°C was allowed to sit for 15 minutes. Its temperature was measured at regular intervals. Next, similar temperature measurements were taken for 15 minutes on a new container of heated water, but this time some cold water was added after the 2-minute reading. Finally, the procedure was repeated except that forthis last test, the cold water was added after the 12-minute reading. The resulting recorded temperatures were plotted on the graph shown here.Based on the information given here, answer the following questions about the experiment. What question was asked in the experiment?What was the hypothesis, expressed as an if-then statement?What were the independent and dependent variables?What was the control in the experiment?Were there any sources of error in the experiment? If so, what?What could you conclude from the data?Cup of Coffee Experiment505560657075800481216Time (min)Temperature (°C)no cold watercold water at 2 mincold water at 12 minScore