=+24. Character recognition, again. The automatic character recognition device discussed in Exercise 22 successfully reads about 85% of handwritten credit card applications.

In Exercise 22 you looked at the histograms showing distributions of sample proportions from 1000 simulated samples of size 20, 50, 75, and 100. The sample statistics from each simulation were as follows:

n mean st. dev.

20 0.8481 0.0803 50 0.8507 0.0509 75 0.8481 0.0406 100 0.8488 0.0354