Answer the following questions about this normal model 7 What is the interval of time for one standard deviation Class 8 Based on your data what percent of average times is within one standard deviation 9 Is that what you d expect Why 10 How many standard deviations from the mean would a time of 3 4 seconds be in class data 11 How many values are above the mean 12 How many values are below the mean 13 Find the z score for your average time