Use the Normal model N(105,10) for the IQs of sample participants. a) What IQ represents the 18th percentile? b) What IQ represents the 93rd percentile? c) What's the IQR of the IQs? a) The IQ representing the 18th percentile is (Round to one decimal place as needed.) b) The IQ representing the 93rd percentile is (Round to one decimal place as needed.) c) The IQR for the IQs is (Round to one decimal place as needed.)