Question 3I 9.2.19-E HW Score: 67.86%, 3.39 o ' points Part 2 of 5 _ @ Paints: 0.14 of 1 sted below are time intervals (min) between eruptions of a geyser. Assume that the "recent" tir 2w years, the \"past" times are from around 20 years ago, and that the two samples are indeper amples selected from normally distributed populations. Do not assume that the population stan equal. Does it appear that the mean time interval has changed? Is the conclusion affected by wt evel is 0.10 or 0.01? Recent 79 91 89 79 57 99 61 87 70 87 82 82 55 81 74 10160 Ch Past 90 88 93 94 65 84 84 92 87 '91 88 91 ' r1.- I IU. P1 P2 H11 91 $92 ' C. H0: L11 u2 H13 P1=l12 Calculate the test statistic. l t= D (Round to two decimal places as needed.)