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Which of the following is true about the one sample z-test and one sample t-test: for...

Which of the following is true about the one sample z-test and one sample t-test:

for a t-test, the population mean and standard deviation are needed.

The z and t-tests are identical in terms of the amount of information needed.

for a t-test only the sample mean is needed.

for a z-test the population mean and standard deviation are needed.

The z and t-tests are identical except for the size of the sample used.

Math   Statistics-And-Probability   
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