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Listed below are time intervals ( min) between eruptions of a geyser. Assume that the " recent" times are within the past few years, the " past" times are from around 20 years ago, and that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal . Does it appear that the mean time interval has changed? Is the conclusion affected by whether the significance level is 0.10 or 0.01?
Answers: 1
Mathematics, 21.06.2019 18:30, rheamskeorsey33
Acoin bank containing only dimes and quarters has 12 more dimes than quarters. the total value of the coins is $11. how many quarters and dimes are in the coin bank?
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Mathematics, 21.06.2019 19:00, niquermonroeee
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Mathematics, 21.06.2019 21:30, BakerElsie02
Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?
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Listed below are time intervals ( min) between eruptions of a geyser. Assume that the " recent" time...
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