Find for the letters X, Y, and Z and their probabilities .05, .05, and .9 and compare it to computed for single letters and pairs of letters, as in Figure 11.6. Does satisfactorily approximate ? How...

Find

for the letters X, Y, and Z and their probabilities .05, .05, and .9 and compare it to

computed for single letters and pairs of letters, as in Figure 11.6. Does
satisfactorily approximate
? How can we remedy the problem?