What is the z-score of x=12, if it is two standard deviations to the right of the mean? What is the z-score of x=9, if it is 1.5 standard deviations to the left of the mean? What i...What is the z-score of x=12, if it is two standard deviations to the right of the mean? What is the z-score of x=9, if it is 1.5 standard deviations to the left of the mean? What is the z-score of x=7, if it is 0.133 standard deviations to the left of the mean? About what percent of the x values from a normal distribution lie within two standard deviations (left and right) of the mean of that distribution?
What is the z-score of x=12, if it is two standard deviations to the right of the mean? What is the z-score of x=9, if it is 1.5 standard deviations to the left of the mean? What i...What is the z-score of x=12, if it is two standard deviations to the right of the mean? What is the z-score of x=9, if it is 1.5 standard deviations to the left of the mean? What is the z-score of x=7, if it is 0.133 standard deviations to the left of the mean? About what percent of the x values from a normal distribution lie within two standard deviations (left and right) of the mean of that distribution?