Final answer:
The student's question pertains to understanding and calculating probabilities related to IQ scores using principles of normal distribution in Statistics, which is a branch of Mathematics. They may need to sketch graph distributions and interpret where an IQ score falls in relation to the population average.
Step-by-step explanation:
The question requires an understanding of IQ scores and their statistical distribution. When a student is asked to find the missing term or solve problems related to IQ scores, they are typically working with concepts of probability and statistics within the subject of Mathematics. For instance, figuring out the probability of having an IQ greater than 120, the minimum IQ needed for MENSA membership, or the middle 50 percent range of IQs fall under the topic of normal distribution - a fundamental concept in statistics. Sketching the graph and writing a probability statement involves plotting the distribution and calculating areas under the curve corresponding to the given probabilities. When it comes to IQ testing, the mean (average) IQ score is set at 100 with a standard deviation of 15 on most tests, meaning the distribution of IQ scores in the general population forms a bell curve.