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Mathematics, 29.11.2021 23:50, ctyrector
A manufacturer of light bulbs advertises that, on average, its long-life bulb will last more than 4800 hours. To test this claim, a statistician took a random sample of 103 bulbs and measured the amount of time until each bulb burned out. The mean lifetime of the sample of bulbs is 4887 hours and has a standard deviation of 380 hours. Can we conclude with 90% confidence that the claim is true? Fill in the requested information below.
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Mathematics, 21.06.2019 16:00, juniorvaldez60
What are the related frequencies to the nearest hundredth of the columns of the two way table? group 1: a-102 b-34group 2: a-18 b-14edited: i donβt have all day to be waiting for an answer. i figured it out.
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A manufacturer of light bulbs advertises that, on average, its long-life bulb will last more than 48...
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