One Sample Test for the Proportion Hypothesis test results Sample Size AA Lower one - tailed test Sample Proportion 0. 795 Critical z- value* Hypothesized value 0. 75 H- value Level of significance 2.0.5 Conclusion Z - statistic Upper one - tailed test One tailed z- value Critical z - value* Two tailed z- value ( + and - ) N-value Conclusion Two - tailed test Critical z - value ( + and - ] A- Value Conclusion