Listed below are time intervals (min) between eruptions of a geyser. Assume that the "recent" times are within the past

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Listed Below Are Time Intervals Min Between Eruptions Of A Geyser Assume That The Recent Times Are Within The Past 1 (77.5 KiB) Viewed 45 times

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 78 92 88 78 58 99 62 88 70 87 82 84 55 81 73 101 61 Past 88 89 93 94 64 86 85 92 86 91 91 91 Let μ, be the recent times and let μ₂ be the past times. What are the null and alternative hypotheses? OA. Ho: H₁ H₂ OB. Ho: H₁ H2 H₁ H₁ H₂ H₁ H₁ H₂ OC. Ho H2 OD. Ho: H₁ H₂ H₁ H₁ H₂ H₁: H₁ H₂ Calculate the test statistic. t= (Round to two decimal places as needed.) Find the P-value. P-value= (Round to three decimal places as needed.) Make a conclusion about the null hypothesis and a final conclusion that addresses the original claim. Use a significance level of 0.10. Ho because the P-value is the significance level. There ▼sufficient evidence that the mean time interval has changed. Is the conclusion affected by whether the significance level is 0.10 or 0.01?