What percentage of data in a normal distribution has values which lie between one standard deviation greater than the mean and two standard deviations greater than the mean? (Suggestion, sketch this out - and of course, watch lecture closely). Which of the following is not a property of normal distributions? changes concavity once O smooth satisfies 68-95-99.7 rule O strictly increases to maximum, then strictly decreases mean is equal to median linear O unimodal symmetricIf we try to compare Q1 on a normal distribution with u - o we find. O They are always equal. O Q1 is less when the distribution is skewed to the left. O Q1 is always less. O We find there is no regular comparison. O Q1 is always greater. O Q1 is greater if it is positive. O They are equal, except when the density curve is linear