Alphonso explains to his boss that his average repair time does not accurately reflect how fast he is, because he had a very difficult repair that took over 10 hours. Is the repair that took over 10 hours an outlier? Explain your reasoning.

Step-by-step explanation:

If f′(x) > 0, then f is increasing on the interval, and if f′(x) < 0, then f is decreasing on the interval. This and other information may be used to show a reasonably accurate sketch of the graph of the function. Example 1: For f(x) = x 4 − 8 x 2 determine all intervals where f is increasing or decreasing.