Question

A company manufactures CD drives that have a 1.6% chance of experiencing disc-read errors. If a CD drive is tested for 250 read operations, the number of times it may fail is
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Answer 1

1,6% what mean ? do you know ?

so this 1,6% mean 1,6 errors possibility from100 time tested

but you need to calcule how many is the number of times it may fail if a CD drive is tested for 250 read operations

in this case you can using easy the 3 simple calcule method

do you know it ?

1,6 errors for 100 tests
x errors for 250 tests


x = (250*1,6)/100 = ?

hope helped understandably