Question

2 of 5 This Quiz: 5 pts possible A simple random sample o size n is drawn rom a population whose population standard devat n σ is known to be 66. The sample meat, seen neato be az Use this information to answer the following questions. see (a) Compute the 90% confidence interval about μ if the sam ple size, n, is 30. see A 90% confidence interval is (DD (Use ascending order. Round to two decimal places as needed.) (b) Compute the 90% confidence interval about μ if the sample size, n, is 55. A 90% confidence interval is D (Use ascending order. Round to two decimal places as needed.) 5 past How does increasing the sample size affect the margin of error, E? O A. As the sample size increases, the margin of error stays the same. O B. As the sample size decreases, the margin of error decreases. O c. As the sample size increases, the margin of error decreases. (c) Compute the 99% confidence interval about if the sample size, n, is 30. past past A 99% confidence interval is (DD (Use ascending order. Round to two decimal places as needed.) Compare the 99% confidence interval to the 90% confidence interval obtained in part (a) O A. As the percent confidence increases, the size of the interval increases

Answer 1