1-Sample Zoverview how to example data see also
1-Sample ZStat > Basic Statistics > 1-Sample Z
Use 1-Sample Z to compute a confidence interval or perform a hypothesis test of the mean when s is known. For a two-tailed one-sample Z-test, the hypotheses are:
H0 : m = m 0 versus H1: m ≠ m 0
where m is the population mean and m 0 is the hypothesized population mean.
One or more samples, each in a column: Choose if you have entered raw data in columns. Enter the columns containing the sample data.
Summarized data: Choose if you have summary values for the sample size and mean.
Sample size: Enter the value for the sample size.
Sample mean: Enter the value for the sample mean.
Known standard deviation: Enter the value for the population standard deviation.
Perform hypothesis test: Check to perform the hypothesis test.
Hypothesized mean: Enter the test mean m 0.