Mathematics, 05.08.2019 18:20 shubbs1038a
Alight bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 753 hours. a random sample of 28 light bulbs has a mean life of 726 hours. assume the population is normally distributed and the population standard deviation is 64 hours. at alphaequals0.05, do you have enough evidence to reject the manufacturer's claim?
Answers: 2
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You wanted to draw an enlargement of design that printed on a card that is 4 in by 5
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Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.
Answers: 3
Alight bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 7...
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