Mathematics, 27.11.2019 20:31 skyhighozzie
It is important that face masks used by firefighters be able to withstand high temperatures because firefighters commonly work in temperatures of 200-500°f. in a test of one type of mask, 12 of 60 masks had lenses pop out at 250°. construct a 90% upper confidence limit for the true proportion of masks of this type whose lenses would pop out at 250°. (round your answers to four decimal places.)
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