Question

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​? Recent 79 90 88 78 56 100 62 88 71 88 82 83 56 81 73 101 62 Past 89 87 93 94 63 86 86 92 86 91 91 91

Answer 1

Answer:-

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