Question

Using parity, the probability for detecting an error, given that one has occurred, is:a. about 50% for either even or odd parityb. about 70% for even parity and 30% for odd parityc. about 30% for even parity and 70% for odd parityd. about 0% for either even or odd paritye about 100% for either even or odd parity

Answer 1

a. about 50% for either even or odd parity

Explanation:

Parity comes in two flavors, even and odd.

Even parity is the exclusive-or of all the data bits while odd parity is its inverse.

The set of even integers is called parity 0.

The set of odd integers is called parity 1.

This implies that the probability for detecting an error is 50% because the even and odd parity both have a chance of 50%.

Answer 2

a. about 50% for either even or odd parity