When thinking about normal distribution, which statements below are accurate? (select all that apply) a. When the distribution is normal, each side is symmetrical. b. A histogram is a good way to see if data values are within the normal distribution. c. A Z-score can help decrease skewness in a distribution table. d. A skewed distribution curve is considered to have trustworthy results. e. A distribution is considered normal if measures of skewness and kurtosis fall within -1 to +1 range