Math, asked by latikagk1700, 18 days ago

What do you mean by Z test?

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Answered by BlackDevil592

0

Answer:

Z-test is a statistical test to determine whether two population means are different when the variances are known and the sample size is large. Z-test is a hypothesis test in which the z-statistic follows a normal distribution. ... Z-tests assume the standard deviation is known, while t-tests assume it is unknown.

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