Suppose that the times between arrivals of hits at a particular website can be described by and exponential distributionXwith parameterQ

IfYis the random variable given by the sample mean on n inter-arrival times, write down an expression for an unbiased estimatorTofQ

A random sample of 16 inter-arrival times gives a mean of 1.4 minutes. From this sample, find an estimatetof parameterQ

I got 0.71 for the 2nd part of the question....