Question

question 3 of 4
stacked
1.0
0.8
0.6
0.4
0.2
0.0
chlorophyll ratio (experimental/control)
cool - pool corals
warm - pool corals
how would such a result have affected the conclusions that were drawn?
the investigators would not be able to reject the null hypothesis and would conclude that cool - pool and warm - pool corals definitely had the same reaction to high temperatures.
the investigators would have rejected the null hypothesis and concluded that cool - pool and warm - pool corals had the same reaction to high temperatures.
the investigators would have rejected the null hypothesis and concluded that cool - pool and warm - pool corals had different reactions to high temperatures.
the investigators would not be able to reject the null hypothesis and would conclude that cool - pool and warm - pool corals could possibly have had the same reaction to high temperatures.

Explanation:

The null hypothesis typically assumes no difference. Since the chlorophyll ratios for cool - pool and warm - pool corals are different (as shown in the bar chart), the null hypothesis of no difference in reaction to high temperatures would be rejected. This indicates that the two types of corals have different reactions to high temperatures.

Answer:

The investigators would have rejected the null hypothesis and concluded that cool - pool and warm - pool corals had different reactions to high temperatures.