Examlex
Solve the problem.
-The accompanying table shows the probability distribution for x, the number that shows up when a loaded die is rolled. Find the variance for the probability distribution.
Z-test
A statistical test used to determine whether there is a significant difference between the mean of a sample and the population mean, assuming the distribution is normal.
µ = 22
Represents a population mean of 22 in statistical notation.
Null Hypothesis
A hypothesis that there is no effect or no difference, and it is the statement that researchers aim to test against.
Z-statistic
A measure that quantifies the difference between the observed value and the expected value under the null hypothesis, expressed in terms of standard deviations.
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