WebQuestion: Assume that adults have IQ scores that are normally distributed with a mean of 101.5 and a standard deviation of 15.8. Find the probability that a randomly selected … WebTranscribed image text: Assume that adults have IQ scores that are normally distributed with a mean of 104.6 and a standard deviation 16.7. Find the first quartile Q7, which is the IQ …
Solved Assume that adults have IQ scores that are normally
WebFeb 26, 2024 · The IQ score separating the bottom 25% from the top 75%. is 87.3. Step-by-step explanation: Given that adults have IQ scores that are normally distributed with a mean of 98.8 and a standard deviation 17.1. To find the first quartile, we calculate X such that P(X WebAssume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15. For a randomly selected adult, find the indicated probability. Make sure you draw a graph. Find the probability of an … portland to crater lake drive time
Section 6.2 Homework Flashcards Quizlet
Web2.2.7 - The Empirical Rule. A normal distribution is symmetrical and bell-shaped. The Empirical Rule is a statement about normal distributions. Your textbook uses an abbreviated form of this, known as the 95% Rule, because 95% is the most commonly used interval. The 95% Rule states that approximately 95% of observations fall within two … WebRandomly choose 1 adult. What is the probability the adult has IQ less than 102? Assume that adults have IQ scores that are normally distributed with a mean of 97 and a standard deviation of 17.9. Find the probability that a randomly selected adult has an IQ greater than 131.1. (Hint: Draw a graph) (Round to four decimal places as nee WebThe grade is 65. Well first, you must see how far away the grade, 65 is from the mean. So 65 will be negative because its less than the mean. 65-81 is -16. Divide that by the standard deviation, which is 6.3. So -16 divided by 6.3 is -2.54, which is the z score or "the standard deviation away from the mean. option b life insurance