Find the area of the triangular region enclosed by the x-axis and the graphs of x + y = 9 and y = ;x. (Hint: Graph the equations to see the region, then use the formula for the area of a triangle.) %3D

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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.