1. It is a process of gathering evidences to either support or rebut a claim. A. Hypothesis B. Hypothesis testing C. Investigation 2. What type of error is committed when a true null hypothesis is rejected? A. Type I B. Type II C. Type III 3. You are testing a hypothesis at a = 0.01. What is the probability of committing a Type I error? A. 99% B. 10% C. 1% 4. A test statistic is found to have a p value of 0.003. With 0.05 level of significance, what is the decision for this hypothesis test? A. Reject null B. Not to reject null C. Both 5. The alternative hypothesis of a certain study is "The mean age of Senior High School students is equal to 18". Which of the following is the null hypothesis if the test is two tailed? A. The mean age of Senior High School students is less than 18 B. The mean age of Senior High School students is equal to 18 C. The mean age of Senior High School students is greater than 18 6. Which of the following represents a two tailed test? A. Ho: Hi # /2 B. Ho: Hi /2 7. If the confidence level is 90%, what is the probability of committing a type I error? A. 0.90 B. 0.10 C. 0.01 8. Which of the following is an example of a null hypothesis? A. Ho: Hi = /2 B. Ho: Hi /2 9. A social worker wants to test (at a = 0.05) whether the average body mass index (BMI) of the students under feeding program is different from 8.2 kg. State the null hypothesis. A. Ha: The average BMI of the students under feeding program is not different from 8.2 kg. B. Ho: The average BMI of the students under feeding program is not different from 8.2 kg. C. Ha: The average BMI of the students under feeding program is different from 8.2 kg