Student: judith Gonzalez Date: 04/27/22 Instructor: Carol Curtis Course: Math 11 -Spring 2022 Assignment: Section 9.2 Homework 6. 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 s 0.01? 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 Recent 77 92 88 79 56 99 63 87 71 87 83 83 57 80 73 102 62 Past 90 88 93 94 66 85 85 92 86 91 91 91 Let u, be the recent times and let 2 be the past times. What are the null and alternative hypotheses? OA. HO: Hy # H2 OB. Ho- H1 = H2 Hy : Hy = H2 Hy : Hy > H 2 O C. Ho: Hy