1. Critical values for the three most common significance levels. Match each question with its correct answer. An answer choice may be used once, more than once or not at all. __What are the critical value(s) for a left-tailed test at the 1% significant level? __What are the critical value(s) for a right-tailed test at the 1% significant level? __What are the critical value(s) for a two-tailed test at the 1% significant level? __What are the critical value(s) for a left-tailed test at the 5% significant level? __What are the critical value(s) for a right-tailed test at the 5% significant level? __What are the critical value(s) for a two-tailed test at the 5% significant level? __What are the critical value(s) for a left-tailed test at the 10% significant level? __What are the critical value(s) for a right-tailed test at the 10% significant level? __What are the critical value(s) for a two-tailed test at the 10% significant level? A. z = -2.45 and z = 2.45 B. z = -2.33 C. z = -1.28 D. z = -2.53 and z = 2.58 E. z = 2.45 F. z = -2.45 G. z = 1.28 H. z = 2.33 I. z = 1.65 J.. z = -1.65 and z = 1.65 K. z = -1.65 L. z = -1.96 and z = 1.96 2. The graph portrays the decision criterion for a one-mean z-test. The curve in the graph is the normal curve for the test statistic under the assumption that the null hypothesis is true. Detemine the a) Rejection region. b) nonrejection region. c) Critical value(s). d) Significance level. e) Confidence level. f) Identify the hypothesis test as two tailed, left tailed, or right tailed. A z = -1645 and z =1.645 . B. 5% C. Between z = -1645 and z =1.645 (non-inclusive) D 90% . E. Between z = -1645 and z =1.645 (inclusive) F. Two tailed G 95% . H Left-tailed . I. 10% J. Left of z = -1645 and right of z =1.645 (inclusive) K Right-tailed . The rejection region is The non-rejection region is The critical value(s) are The significance level is Identify the hypothesis test as two tailed, left tailed, or right tailed. The confidence level is 3. A two-tailed test is to be performed at the 15% significance level. Round all decimals answers to two decimal places X.XX a) What is the confidence level? __ % b) What are the critical values? The left critical value is z = and the right critical value is z = 4. A left-tailed test is to be performed at the 8% significance level. Round all decimal answers to two decimal places X.XX a) What is the confidence level? __ % b) What is the critical value? z = 5. A right-tailed test is to be performed at the 3% significance level. Round all decimal answers to two decimal places X.XX a) What is the confidence level? __ % b) What is the critical value? z =