In a certain university, math SAT scores for the entering freshman class averaged 650 and had a standard deviation of 100. The maximum possible score is 800. Is it possible that the scores of these freshmen are normally distributed? Explain
Intro to Stats Chapter 6 The Normal Distribution Normally distributed variable- shape of normal curve Z scores have mean of 0 and standard deviation of 1 The standard version of normally distributed variable x, has the standard normal distribution 6.2 areas under the standard normal curve Basic properties of standard normal curve 1. total area under curve is 1 2. never touches horizontal axis 3. left side mirror of right 4. almost all the data is between -3 and 3 ***figure 6.18 – every problem for the rest of the semester can come back to 1 of the 3 pictures*** easy – area to the left of z tricky- 1- area to the left of z
