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?