The surface area S (in square meters) of a hot-air balloon is given by S(r) = 4xr where r is the radius of the balloon (in meters). If the radius r is increasing with time t (in seconds) according to the formula t, t20, find the surface area S of the balloon as a function of the time t. r(t) =

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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.