Certain digital communication schemes use redundancy in the form of an error control code to improve the reliability of communication.the compact disc recording media is one such example.assume a code can correct 2 or fewer errors in a block of N coded bits.if each bit detection is independant with a probability of error P(E)=10^-3.how small must N be so that the probability that the block is detected incorrectly is less than 10^-6?