For 40 eruptions of the Old Faithful geyser in Yellowstone National Park, duration times (sec) were recorded

Question:

For 40 eruptions of the Old Faithful geyser in Yellowstone National Park, duration times (sec) were recorded along with the heights (ft) of the eruptions. The paired duration and height measurements were used to obtain the results shown in the accompanying Excel display. Is there sufficient evidence to support the claim that there is a linear correlation between the durations of eruptions and the heights of the eruptions? Explain.

Use a significance level of a = 0.05.