mun: 1 '- . V Armor 1: (You left thls blank) Answer 2: (You left this blank) Tests of a new light led to an estimated mean life of 1,321 hours...

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. mun": 1 ‘- . V Armor 1:(You left thls blank) Answer 2: (You left this blank) Tests of a new light led to an estimated mean life of 1,321 hours and standarddeviation of 106 hours. The manufacturer will advertise the lifetime of the bulb using the largest value for which it is expected that 90% of the bulbs will last atleast that long. Assuming bulb life is normally distributed, find that advertisedvalue. '