Suppose a histogram of sample data is relatively normally distributed and has no outliers. Is this sufficient to conclude that the sample data are from a population that is normally distributed? If not, what other step could be taken to make such a conclusion? O No, it is not sufficient. A QQ plot also needs to be examined Yes, it is sufficient. As long as there are no outliers the population is normally distributed No, it is not sufficient. We also need to know the mean and standard deviation. O Yes, it is sufficient. Since the histogram is normally distributed, the population must be normally distributed