Find the critical value(s) for a left-tailed z-test with a = 0.08. Include a graph with your answer. The critical value(s) is(are). (Round to two decimal places as needed. Use a comma to separate answers as needed.)
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- Find the critical value, z0, from the z table for the given parameters. a=0.20 two tailed testUsing the z table (Table E), find the critical value (or values) for each. A) α = 0.01, left tailed test.You are performing a two-tailed test.If α=.005α=.005, find the positive critical value, to two decimal places
- A researcher is using a two-tailed hypothesis test with α = 0.05 to evaluate the effect of a treatment. If the boundaries for the critical region are t = ± 2.080, then how many individuals are in the sample?In a sample of 44 men, 35 said that they had less leisure time today than they had 10 years ago. In a sample of 44 women, 28 women said that they had less leisure time today than they had 10 years ago. At a= .01, is there a difference in the proportions?Use p1 for the proportion of men with less leisure time. State the hypotheses and identify the claim H0: H1: one tailed or two tailed Find the critical value(s). Round the answer to at least three decimal places and ensure your degrees of freedom are correct before proceeding. If there is more than one critical value, seperate them with commas. Critical value(s)= Compute the test value. Round sample proportions to three decimal places and z score values to two decimal places. z= Reject or do not reject the null hypothesis Is there enough evidence to support the claim Find the 99% confidence interval for the difference of the two proportions. Round the answers to three decimal places ( ) < p1-p2 < ( )Out of 188 men over age 65 years, 70 were still working. 87 out of 202 women over the age of 65 yearswere still working. At a 0.08 level of significance, can you claim the proportion of men and women workingover the age of 65 is the same? a.)State the hypotheses and label the claim. b) Is the test left-tailed, right-tailed, or two-tailed (circle one)?c) What is/are the critical value(s)? Draw a picture. d) What is the P-value and test-statistic?e) Give two reasons for your decision to reject/not reject H0 based on: 1) Test statistic compared to criticalvalue 2) P-value compared to α Then, state the conclusion by relating back to the original claim.
- You are performing a right-tailed test.If α=.001α=.001, find the critical value, to four decimal places.zα=? You are performing a two-tailed test.If α=.005α=.005, find the positive critical value, to four decimal places.zα/2= ?A z-score of –1.6 has a corresponding Stanine score of:State the t critical value that would be used for a 99% interval based on a sample size of 37.