Question

4 of 5 This Quiz A simple random sample of size n is drawn. The sample mean, x, is found to be 18.5, and.the sample standard deviation, s, is found to be 4.3 Click the icon to view the table of areas under the t-distribution. (a) construct a 95% confidence interval about if the sample size, n, is 34. Lower bound:Upper bound:D (Use ascending order. Round to two decimal places as needed.) (b) Constructa 95% confidence interval about if the sample size, n, is 61. Lower bound: Upper bound: □ (Use ascending order. Round to two decimal places as needed.) ces How does increasing the sample size affect the margin of error, E? O A. The margin of error decreases. O B. The margin of error increases. O C. The margin of error does not change. (c) Construct a 99% confidence interval about if the sample size, n, is 34 Lower bound:Upper bound: (Use ascending order. Round to two decimal places as needed.) Compare the results to those obtained in part (a) How does increasing the level of conidence affect the size of the margin of O A. O B. The margin of error increases. The margin of error decreases. O C. The margin of error does not change Click to select your answer(s). Save for Later MAT 102: Intr This course (Introduction To Statistics (W118-19 Mat 102 JA)) is based on

Answer 1