## Maximum likelihood estimator

There are 20 samples, and 8 of their values are

975, 984, 1036, 1074, 1081, 110, 1157, 1186.

Other 12 values are same or more than 1200.

By assuming that the values follow exponential distribution Exp(x),

I want to get MLE of x.

I don't have any idea how to estimate the answer i want.