how is normal distribution characterized? what is the definition of normal distribution in statistics how can one prove that the random sample is normally distributed if the sample mean and sample variance are independent? what is the purpose of normal distribution definition of random sampling mean and variance what is the characterization of a normal distribution how to characterize the normal distribution how to prove that the randomly selected sample is normally distributed what is normal distribution definition how do you determine a normal distribution in a sample sample define normal distribution what is the characterization of a normal distribution in a random sample what makes a random sample normally distributed how to characterize the normal distribution of an experiment which of the following is a characteristic of normal distribution? quizlet what is the characteristic of normal distribution definition of normal distribution characterization of the normal distribution how can one prove that the random sample is normally distributed? what is the standard deviation for a normal distribution