The t value is agreed by statisticians to be more proper than the z value,but the t value does not have set critical values such as 1.96.

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This statement is true. The critical values for the t distribution vary depending on the sample size and the level of significance, whereas the critical value for the z distribution is always 1.96 for a 95% confidence interval. However, the t distribution is more appropriate than the z distribution when the sample size is small or the population standard deviation is unknown.

The T Value Is Agreed by Statisticians to Be More