please help me answer this one, thankyou!

6. What will be the t-value of the given problem? A. 1.729 B. 1.456 C. 1.612 D. 1.551 7. Using the t-table, give the value of 25th percentile. A. 25 B. 26 C. 27 D. 28 8. What will be the t-value of 95th percentile? A. 1.729 B. 1.456 C. 1.612 D. 1.551 9. What will be the degree of freedom with a t-value of 1 and a sample size of 2? A. 1 B. 2 C. 3 D. 4 10. Find the t-value of 2.5th percentile on the t-table with a degree of freedom of 6. A. 2.570 B. 4.030 C. -2.570 D. -4.030 II. For numbers 11-15, complete the table below. Write your answer on a separate sheet of paper. Percentile n t 40th percentile 23 (11) 75th percentile 20 (12) 90th percentile 25 (13) 95th percentile 15 (14) 97.5th percentile 10 (15)Module I Percentiles and t-distribution What I Know 1. What is the other term for t-distribution? A. Z-distribution B. Probability distribution C. Percentile distribution D. Student's t-distribution 2. This refers to the maximum number of logically independent values which varies in the data sample. A. Level of significance B. Percentiles C. Degree of freedom D. Probability 3. This refers to the measure of position whose data is divided into 100 parts. A. Percentiles B. Quartiles C. Deciles D. Median 4. What is the level of significance if the confidence interval is 90%? A. 0.05 B. 0.10 C. 0.005 D. 0.25 5. What will be the degree of freedom of the data with a sample size of 20? A. 17 B. 18 C. 19 D. 20 For number 6 to 8, use the given data below to answer the following questions. "There are 9 students who will be taking up the test, the researcher sets the level of significance to 0.05. The following are the scores of nine students in the test: 23, 25, 25, 26, 27, 28, 30, 40, 45IC SIZE? . now LIVES O (Assume that the other factors are constant) A. The sample size is constant for all va r all values of o. B. Lower o reduces the required sample size. C. Lower o increases the required sample size. D. Higher o decreases the required sample size. B C D . A researcher wants his estimate with a minimum margin O O of error: Which of the following is suggested? A. Reduce the sample size. B. Use a sample size of 30. C. Increase the sample size. D. Use a sample size of less than 25. A B C D 8. How large is the sample size required so that a researcher O O is 98% confident with the estimate of a sample, of standard deviation .5, that the error will not be more than 2? C. 42 A. 6 B. 34 D. 84 ABCD 9. If a 95% level of confidence is applied by the researcher in oooo the condition given in item # 8, what sample size shall be obtained? A. 8 B. 17 C. 24 D. 34 For questions 10 to 15, refer to the situation that follows. The diameter of the coconuts harvested in a local farm in Quezon Province is normally distributed with a population standard deviation of 8 mm. At a 95% level of confidence, a researcher wants to have an estimate that will not be more than 3 mm from the TRUE population average diameter of the coconuts. A B CD 10. What correct confidence coefficient should be applied to ooo determine the required sample size? A. 2.576 B. 2:33 C. 1.96 D. 1.645 A B C D 1 1. What is the given population standard deviation from the O situation? A. 8 B. 16 C. . 24 D. 64 A B CD 12. What is the desired margin of error for the estimate of the oooo population parameter? A. 2 B. 3 C. 4 D. 16 A B C D 13. What minimum sample size shall be used by a researcher to meet the expected results? (Round up to the nearest whole number) A. 16 B. 28 C. 62 D. 107 A B C D 14. If the researcher wishes to reduce the error of the O O 0 O estimate, what should be done? I Consider a larger sample. II Reduce the level of confidence III Increase the level of confidence. A. I only C. I and II only B. II only D. I and III only A B C D 15. What sample size is needed for the situation to have a OOO margin of error not more than 1? (Round to the nearest whole numberB28 A. 87 B. 102 C. 246 D. 425Week Solving Problems Involving 3&4 Sample Size Determination What I Know Let us see how far you will go and how much you know about this pretest. Please answer all questions with all your best and utmost honesty so that we can gauge your learning in the target competency of this lesson. Let's get started! NOTE: For students with online connections and want to have a paperless assessment, please go to the link given by your teacher. Direction: Choose the letter of the correct answer for each item. Shade/ blacken the circle that corresponds to your chosen answer. A B O C D 1. Which of the following factors is not considered in the determination of sample size? A. margin of error B. level of confidence C. confidence interval D. variance or standard Deviation A B C D O ooo 2. The value of confidence coefficient ( Za ) of 1.645 is used in sample size determination if a researcher wants to be % confident that the parameter is within the estimate. A 99 B. 95 C. 92 D. 90 A B C 3. How does the level of confidence affect the sample size? O O O o (Consider that other factors are constant) A. The higher the level of confidence, the smaller the sample size required. B. The lower the level of confidence, the larger the sample size required. C. The lower the level of confidence, the smaller the sample size required. D. The sample size remains constant in every level of confidence. A B C 4. Which of the following is the correct equation for sample O size determination?. A. n = x - Za/2 C. n = ( Za / 2 ) + ( 0 ) 12 E . B. n = X+E D. n = ABCD 5. How does the margin of error and sample size affect one another? (Assume that the other factors are constant) A. A smaller sample size reduces the margin of error. B. A higher margin of error requires a larger sample. C. A lower margin of error requires a larger sample size. D. A small sample size results in a lower margin of error