A function and its graph are given. (x) = x + 2x2 - 12x – 20 60 40 20 -8 -6 -4 -2 6 -40- (a) From the graph, estimate where f"(x) > 0. (Enter your answer using interval notation.) |(-2,00) Estimate where f"(x) < 0. (Enter your answer using interval notation.) -00, - 2) Estimate where f"(x) = 0. (Enter your answers as a comma-separated list.) %3D -2 (b) Use (a) to decide where f'(x) has its relative maxima and relative minima. (Enter your answers as comma-separated lists. If an answer does not exist, enter DNE.) relative maxima x = DNE

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.