Question

Which of the following is a key difference between the t test and the z-test? a....

  1. Which of the following is a key difference between the t test and the z-test?

a.

The t test requires the knowledge of the true population mean.

b.

The t test uses the sample variance in place of the population variance.

c.

The t test computes the standard error using the population standard deviation.

d.

All of these are differences between t and z.

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