When the necessary conditions are met, a lower tailed test is being conducted for the difference between two population proportions. If the value of the test statistic is -2.50, then the p-value is 0.0062.

Lower Tailed Test

A statistical test used to determine if a dataset's lower end values significantly differ from the hypothesized value.

Test Statistic

A standardized value calculated from sample data during a hypothesis test that is used to make a decision about the null hypothesis.

P-value

The probability of obtaining test results at least as extreme as the ones observed during the test, assuming the null hypothesis is true.