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This Z-test calculator is a tool that helps you perform a one-sample Z-test on the population's mean. Two forms of this test - a two-tailed Z-test and a one-tailed Z-tests - exist, and can be used depending on your needs.
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This Z-test calculator computes data for both one-sample and two-sample Z-tests. It also provides a diagram to show the position of the Z-score and the acceptance/rejection regions.
Z-test Calculator Sample Mean: Population Standard Deviation: Sample Size: Population Mean: Alternative Hypothesis: Greater Than Less Than Not Equal To Level of Significance (α): Tail Type: One-Tailed Two-Tailed Calculate
Calculator to find out the z-score of a normal distribution, convert between z-score and probability, and find the probability between 2 z-scores.
Nasz kalkulator testu Z jest narzędziem, które pomoże ci wykonać jednopróbkowy test Z dla średniej w populacji. Może on wykonać dwie formy tego testu — dwustronny test Z i jednostronny test Z — w zależności od twoich potrzeb.
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The Z test checks if the expected mean is statistically significant, based on a sample average and a known standard deviation. The tool also compares the sample data to the standard deviation, calculates the test power, checks data for normality and draws a histogram and a distribution chart.
