question archive A company installs new? central-heating furnaces and has found that for 22 ?% of all? installations, a return visit is needed to make some modifications
A company installs new? central-heating furnaces and has found that for 22 ?% of all? installations, a return visit is needed to make some modifications
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A company installs new? central-heating furnaces and has found that for 22 ?% of all? installations, a return visit is needed to make some modifications. Six installations were made in a particular week. Assume independence of outcomes for these installations. Complete parts a. through c. below.
a. What is the probability that a return visit will be needed in all these? cases?
?(Round to six decimal places as? needed.)
b. What is the probability that a return visit will be needed in none of these? cases?
?(Round to six decimal places as? needed.)
c. What is the probability that a return visit will be needed in more than 1 of these? cases?
?(Round to six decimal places as? needed.)
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