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2. Among patients at a local fertility clinic, in-vitro fertilization (IVF) is a popular treatment for achieving pregnancy. Suppose that 250 past patients of the clinic are randomly selected from the much larger population of all past patients receiving IVF. Among these patients, the average number of IVF cycles the patients went through was 2.2 cycles, with an SD of 1.8 cycles. (We are not keeping track here of whether patients became pregnant, only how many cycles they went through at the clinic.) (a) Consider all the past patients of this clinic receiving IVF. The average number of cycles these patients received is estimated to be about cycles, with an estimated standard error of cycles