6] Refer to the normal distribution on the "Normal" tab. :1 For this normal distribution, state the mean. b] For this normal distribution, 95.44% of all observations are between the values 21 and 39. State the standard deviation. c) Calculate the coefficient of variation [CV]. d] What percent of the observations would fall between 21 and 36 in this distribution? F27 X Y X B C D E F G H I J K L M N O P A f(X) Normal distribution 2 3 OUT A 15 16 17 18 19 20 X 21 24 27 30 33 36 39 21 22 23 24 25 26 27 P(lower) P(upper) Z X mean std.dev 28 29