Statistics help needed Answer the questions below. An index that is a standardized measure used in observing infants over time is approximately normal with a mean of 105 and a standard deviation of 16 You will want to use the Normal Curve Applet that was taught in the lecture presentation for this problem. Applet a.What proportion of children have an index of 1at least115at least 727 The proportion of children having an index of at least 115 is (Round to four decimal places as needed) The proportion of children having an index of at least 72 is (Round to four decimal places as needed b.Find the index score that is the 94th percentile 4 The 94th percentile index score is (Round to two decimal places as needed. cFind the index score such that only 6% of the population has an index below it 6% of the population have an index score below (Round to two decimal places as needod)