Question

Spelling errors in a text are either "nonword errors" or "word errors." A nonword error produces a string of letters that is not a word, as when "the" is typed as "teh." Word errors produce the wrong word, as when "loose" is typed as "lose."

Answer 1

(( i missed parts of the question))

Nonword errors make up 25% of all errors. A human proofreader will catch 90% of nonword errors and 70% of word errors.

a) What percent of all errors will the proofreader catch? Show your work.
b) Of all errors that the proofreader catches, what percent are nonword errors? Show your work.
c) What is the probability that your fellow student misses 3 or more of the 10 word errors that you made?

pleaseeee help me!!