1. Some institute conducted a clinical trial of the XSORT method designed to increase the probability of conceiving a girl, As of this writing, 574 babies were born to parents using the XSORT method, and 525 of them were girls. a. What is the best point estimate of the population proportion of girls born to parents using the XSORT method? [1 mark] b. Use the sample data to construct a 99% confidence Interval estimate of the percentage of girls born to parents using the XSORT method. [2 marks] c. Based on the results, does the XSORT method appear to be effective? Why or why not? [2 marks]