T Value Vs Z Value. T tests are statistical hypothesis tests that you use to analyze one or two sample means. You ll get a different value from z 1 382 than t 1 382.
The 1st one use z table and the 2nd use t table. When to use z or t statistics in significance tests. For estimating the mean there are two types of confidence intervals that can be used.
μ is the population mean.
A confidence interval is a way of using a sample to estimate an unknown population value. The z score formula doesn t say anything about sample size. μ is the population mean. σ is the population standard deviation and.
