Consider the TCP procedure for estimating RTT. Assume that α = 0:5. Let SampleRTT1 be the most recent sample RTT, let SampleRTT2 be the next most recent sample RTT, and so on. For a provided TCP connection, assume four acknowledgments have been returned with corresponding sample RTTs SampleRTT4, SampleRTT3, SampleRTT2, and SampleRTT1. Express EstimatedRTT in terms of four sample RTTs.