The alignment between the magnetic tape and head in a magnetic tape storage system affects the performance of the system. Suppose that 10% of the read operations are degraded by skewed alignments, 5% of the read operations are degraded by off-center alignments , and the remaining read operations are properly aligned. The probability of read error is 0. 01 from a skewed alignment, 0. 02 from an off-center alignments,and 0. 001 from a proper alignment. What is the probability of a read error?