Frq: a researcher gathered evidence about the number of times different age students consult the internet to check facts for research reports. participants between 10 and 15 years old consulted the internet an average of 10.1 times during the research report, and participants between 15 and 25 years old averaged 7.3 times. explain what "statistical significance" would mean in the context of this study.

Answer texture;

You're asking in the ap section, so i'll give the ap calculus-style answer. alternatively, you can find the vertex of the parabola and use the "y"-coordinate as the answer.

the maximum height can occur at a critical number, that is, a number  such that  .

the derivative of  can be calculated as follows:



find a value of  that is a zero of the derivative:


this is parabola that is opening downward; we can assume there is a maximum at  .

to find that maximum, calculate  .

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