z Confidence intervals for the Mean Statistics Inference with the z and t Distributions z Confidence intervals for the Mean Questions How do you find the z score of a percentile? What is the Z score for 95%? What is the z value for a 90, 95, and 99 percent confidence interval? In the Z-score formula, can the standard error measurement be used instead of standard deviation? What is 'z' if the confidence interval is 89%? What is 'z' if the confidence interval is 80%? A distribution has a standard deviation of #sigma=8#. How do you find the z-score below the mean by 8 points? How do you find the z-score that has 93.82% of the distribution's area to its left? Question #d4c02 Inference with the z and t Distributions View all chapters One-sample z test Two-sample z test z Confidence intervals for the Mean One-sample t test Matched-pair t test Two-sample t test t Confidence intervals for the Mean Prev Next