Question3 10points Suppose you are testing hypotheses Ho 8

Question#3 (10points) Suppose you are testing hypotheses: Ho : = 8 versus Ha : K 8, you are using a z-test and your test statistics is z--1.57. Use tables to compute the p- value for your test, include appropriate sketch illustrating your computation. Give 4 decimal places Sketch: p-value: Part two: Multiple choice questions. Select one from A to E as appropriate. (5 points each) Use following information for Questions #4 8 Red Blood cell count A simple random sample of 30 US adults is obtained and each person\'s red blood cell count (in cells per microliter) is measured. A sample mean is 4.63. Let Ibe a mean blood cell count for all US adults Question #4 Suppose the population standard deviation for red blood cell count is 0.54. Compute a Margin of Error in 95.44% confidence interval for . Round your answer to 4 decimal places. A) 1.6906 B) 0.1972 C) 0.0986 D) 0.0180 E) none of these Question#5 Suppose population standard deviation for red blood cell count is 0.54 and you want to test at 5% significance level the following hypotheses: Ho : = 4.5 versus Ha : # 4.5 using a z-test. Select critical value(s) for the rejection region for your test: (A) ±1.645 (B) ±2 (C) 1.645 (D) ±1.96 (E) none of these Question#6: Suppose the p-value for your test you conducted in previous question (#5) was 0.1873, what is the conclusion for your test at 5% significance level? Select one of the answers below: (A) Reject Ho, we have no evidence for Haat = 0.05 (B) Do not reject Ho, we have no evidence for Hat -0.05 (C) Reject Ho, we have evidence for Haat 0.05 (D) Do not reject Ho, we have evidence for H,at = 0.05

Solution

P=0.0582

QUESTION 4 OPTION B