Assume the pdf o the random variable x is f(x;?) = ? e-?x, x > 0, ? > 0, where ? is the parameter of the distribution. Employ the method of maximum likelihood to obtain an estimator of ?, and then compute the estimate for the five observations of x given below.
x1 = 0.9, x2 = 1.7, x3 = 0.4, x4 = 0.3, x5 = 2.4