Question 15 1.25 pts Which of the following experimental scenarios would be the best experimental set-up for the goldfish metabolism lab? O The goldfish are placed in darkness during the control trial, then placed in ambient light during the experimental trial O One set of goldfish is placed in regular fish water during the control trial, then a second set of goldfish is placed in caffeinated fish water during the experimental trial. O The goldfish are placed into cold fish water during the control trial, then placed into warm fish water during the experimental trial O The goldfish are placed into regular fish water for the control trial, then placed into tobacco infused fish water for the experimental trial. Question 16 1.25 pts A group of 3 students designs an experiment to measure the rate of oxygen consumption of codfish at a young age. The null hypothesis proposed by these students is that exposure to nicotine has no effect on the rate of oxygen consumption by codfish. By using the Loggerlite program, the students ran four trials: two control, and two experimental, on two codfish. From these graphs they obtained slopes of -1.56 and -1.63 for the control trials, and -1.78 and -2.07 experimental trial respectively. The p-value they obtained from experiment was 0.017. Taking into account both the p-value obtained as well as the observed slopes of the two trials, should the students reject or fail to reject the null hypothesis? Why? O The students should reject the null hypothesis because the p-value is low and the difference in the slopes obtained from the two trials was not significant. O The students should fail to reject the null hypothesis because the p value was high, indicating that the difference in the slopes obtained from the two trials was not significant O The students should reject the null hypothesis because the p value was low and the slopes obtained from each trial look very similar, O The students should fail to reject the null hypothesis because the p values were low and there was a significant difference in the slopes of the control and experimental graphs. O The students should reject the null hypothesis because the p value was low, indicating that the difference in the slopes obtained from the two trials was significant