Consider the TCP procedure for estimating RTT. Suppose that α = 0:5. Let SampleRTT1 be theMost recent sample RTT, let SampleRTT2 be the next most recent sample RTT, and so on. For agiven TCP connection, suppose four acknowledgments have been returned with correspondingsample RTTs SampleRTT4, SampleRTT3, SampleRTT2, and SampleRTT1. Express EstimatedRTT interms of the four sample RTTs.