Performance Task #2: Statistics & Probability (Quarter 3, Week 4) IQ tests are often standardized so that they have a mean of 100 and a standard deviation of 15. Using this information, work on problems 1 through 6. 1. What percentage of the population would be expected to fall between IQs of 95 and 105? (5 points) 2. What percentage of the population would be expected to fall between IQs of 100 and 120? (5 points) 3. What percentage of the population would have IQs of 125 or greater? (5 points)4. What percentile corresponds to an IQs of 90? To an IQs of 108? (10 points) 5. If you were told that your IQ score falls in the 80th percentile, what would your IQ be? ( 5 points) 6. If a person's IQ score fell in the extreme 10% of the population, what would that person's IQ be? (Hint: The use of the word "extreme" implies that both the upper and lower portions of the distribution are involved.) (10 points)