Refer to the accompanying data display that results from a simple TInterval random sample of times (minutes) between eruptions of the Old (85.74,91.76) Faithful geyser. The confidence level of 95% was used. Complete X = 88.75 parts (a) and (b) below. SX = 8.897431411 n = 36 . . . a. Express the confidence interval in the format that uses the "less than" symbol. Round the confidence interval limits given that the original times are all rounded to one decimal place. min