The pregnancy length in days for a population of new mothers can be approximated by a normal distribution with a mean of 268 days and a standard deviation of 9 days. (a) What is the minimum pregnancy length that can be in the top 10% of pregnancy lengths? (b) What is the maximum pregnancy length that can be in the bottom 6% of pregnancy lengths? days. (a) The minimum pregnancy length is (Round to one decimal place as needed.) (b) The maximum pregnancy length is days. (Round to one decimal place as needed.)

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15.  What is the minimum IQ required to be able to correctly claim to be in the "top 5%" of IQ scores. Round to the nearest whole number.

Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. 0.1931 The indicated IQ score is 113. (Round to the nearest whole number as needed.)

The graph illustrates the distribution of test scores taken by College Algebra students. The maximum possible score on the test was 130, while the mean score was 70 and the standard deviation was 13. 31 44 57 70 83 109 96 Distribution of Test Scores Use the "Empirical Rule", not a calculator or other technology. Do not round your answers. What is the approximate percentage of students who scored higher than 96 on the test? % What is the approximate percentage of students who scored between 44 and 96 on the test? What is the approximate percentage students who scored between 57 and 83 on the test? What is the approximate percentage of students who scored between 57 and 70? %