α = 0.05 for a two-tailed test. Find the critical z value.
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- if alpha is 1%, find the critical value (z-score)You are performing a two-tailed test.If α=.002α=.002, find the positive critical value, to three decimal places.zα/2If the df value for a two tailed test with alpha =0.05 were to increase from df=5 to df=22,what would happen to the critical values for t?
- If the observed statistic exceeds the critical ratio, what can we say about the p value with respect to the alpha level? A. p < α B. p > αWe want to use a z-test to determine if the sample mean is less than 30 at alpha = 0.05. Use the z-table to find the critical value(s)Find the critical value t alpha/2. 99%; n=17; standard deviation is unknown; population appears to be normally distributed.
- You are performing a left-tailed test.If α=.002α=.002, find the critical value, to three decimal places.zα =An ANOVA produces an F-ratio with df = 1, 34. Could the data have been analyzed with a t test? What would the degrees of freedom be for a t statistic?A. For this test, what is the critical value of an a-level of 0.05?
- Assuming all other factors are held constant, if the df value for a two-tailed t-test with a = .05 were increased from df =6 to df = 20, what would happen to the critical values for t?We want to use a z-test to determine if the sample mean is greater than 20 at the alpha = 0.05. What is the critical value(s)?You are performing a two-tailed test.If α=.005α=.005, find the positive critical value, to two decimal places