How do you find the critical value of Z?
How do you find the critical value of Z?
The level of significance which is selected in Step 1 (e.g., α =0.05) dictates the critical value. For example, in an upper tailed Z test, if α =0.05 then the critical value is Z=1.645….
| Upper-Tailed Test | |
|---|---|
| α | Z |
| 0.05 | 1.645 |
| 0.025 | 1.960 |
| 0.010 | 2.326 |
What is the Z critical value at 0.01 level of significance one tailed?
= − 2.58
At the 0.01 level of significance, zα = − 2.58 and zα = 2.58.
What are the critical z values for a two tailed hypothesis test if α 01?
For a two-tailed test and α = 0.01, the z critical values are -2.576 and +2.576. Since the z-test statistic is +6.00, it is greater than +2.576, and the decision is to reject the null hypothesis.
What is the critical value of 0.01 level of significance?
Hypothesis Test For a Population Proportion Using the Method of Rejection Regions
| a = 0.01 | a = 0.05 | |
|---|---|---|
| Z-Critical Value for a Left Tailed Test | -2.33 | -1.645 |
| Z-Critical Value for a Right Tailed Test | 2.33 | 1.645 |
| Z-Critical Value for a Two Tailed Test | 2.58 | 1.96 |
What does an alpha level of .01 mean?
Alpha is the probability of making a Type I error (rejecting the null hypothesis when the null hypothesis is true). You want this value to be small, so you plan an experiment so that the sample size is large enough and the decision rule is selected so that alpha is 0.05 or sometimes 0.01.
What are the critical z values for a two tailed hypothesis test if α 0.01 quizlet?
What are the critical values for a two tailed test with a 0.01 level of significance?
For a two-tailed hypothesis test with a 0.01 significance level, the critical z values are ±2.576.
