Mathematics, 07.12.2019 22:31 duauifja
Amanufacturer knows that their items have a normal distribution lifespan with a mean of 11. nine years in a standard deviation of 3.9 years. if 4 items are picked at random, 1% of the time their mean life will be less than how many years?
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Amanufacturer knows that their items have a normal distribution lifespan with a mean of 11. nine yea...
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