Directions. Read and analyze the questions. Shade only the letter of the correct answer in the provided answer sheet. Erasures and or midtiple marks are considered wrong. A. Multiple Choices. Choose the letter of the best answer to the given questions. 1. What is the statistical method used in making decisions using experimental data? A. Analytical testing C. Hypothesis testing B. Experimental testing D. Simple analysis 2. In a one-tailed test, in which critical value listed below will the computed z of 2.313 fall in the acceptance region? A. 1.383 B. 1.533 C. 2.228 D. 2.365 3. Which of the following would be an appropriate null hypothesis? A. The mean of a sample is equal to 75. B. The mean of a population is equal to 75. C. The mean of a sample is not equal to 75. D. The mean of a population is greater than 75. I. If the computed z-value is 2.015 and the critical value is 1.833, which of the following statements could be true? A. It lies in the rejection region, Ho must be rejected. B. It lies in the rejection region, we failed to reject Ho. C. It lies in the non-rejection region, Ho must be rejected. D. It lies in the non-rejection region, we failed to reject Ho. 5. If the computed z-value is - 1.290 and the critical value is - 2.571, which of the following statements could be true? A. It lies in the rejection region, Ho must be rejected. B. It lies in the rejection region, we failed to reject Ho. C. It lies in the non-rejection region, Ho must be rejected. D. It lies in the non-rejection region, we failed to reject Ho. 6. A researcher estimates that the average height of buildings in a large city is at least 700 feet. Based on the given data, which is the parameter? A. the researcher C. buildings in the large city B. at least 700 feet D. the average height of the building 7. SWS survey was trying to see if people in the Philippines thought the pollution was too high. Which choice best represents a parameter? A. all people in the Philippines B. 500 randomly selected residents of the Philippine C. 71% of the residents surveyed who thought the pollution was too high D. percentage of all people in the Philippines who thought the pollution was too high 8. An education official wants to estimate the proportion of adults aged 18 and above who had read at least one book during the previous year. A random sample of 1,006 adults aged 18 or older is obtained, and 835 of those adults had read at least one book during the previous year. Determine the parameter in the situation. A. The parameter is the 835 adults. B. The parameter is the average of adults aged 18 and above. C. The parameter is the proportion of adults who had read at least one book during the previous year. D. The parameter is the random sample of 1,006 adults 18 and above who had read a book in the previous year, 9. A study claims that the mean survival time for a certain cancer patient treated immediately with chemotherapy and radiation is 24 months, Which is the parameter? A. 24 months B. study claims on cancer C. mean survival time for a certain cancer patient D. mean survival time of 24 months with chemotherapy and radiation