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Mathematics, 18.11.2019 20:31 astultz309459

Shorty’s muffler advertises it can install a new muffler in 30 minutes or less. however, the work standards department at corporate headquarters recently conducted a study and found that 20% of the mufflers were not installed in 30 minutes or less. the maumee branch installed 50 mufflers last month. if the corporate report is correct: how many of the installations at the maumee branch would you expect to take more than 30 minutes?

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