ing distances of a Honda CRV can be approximated by a normal distribution, where the mean is 54 meters and the standard deviation is 4.5 meters.  Suppose a random sample of 20 Honda CDVs is selected.  Find the probability that the sample mean is less than 53.5 meters.      0.456     0.427     0.309     0.293

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.