(b) Construct a 95% confidence interval about u if the sample size, n, is 61. Lower bound:: Upper bound: (Use ascending order. Round to two decimal places as needed.)

Construct the confidence interval for the population mean u. c = 0.90, x = 5.3, o = 0.8, and n= 54 A 90% confidence interval for u is ( D. (Round to two decimal places as needed.) Enter your answer in the edit fields and then click Check Answer. All parts showing Type here to search

Use the Student's t distribution to find tc for a 0.95 confidence level when the sample is 17. (Round your answer to three decimal places.)

Use the Student's t distribution to find tc for a 0.90 confidence level when the sample is 25. (Round your answer to three decimal places.)

Use the Student's t distribution to find tc for a 0.95 confidence level when the sample is 3. (Round your answer to three decimal places.)

Use the given confidence interval to find the margin of error and the sample mean. (6.05,10.81) The sample mean is (Type an integer or a decimal.) The margin of error is. (Type an integer or a decimal.)

Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96

Construct a confidence interval for p, - p2 at the given level of confidence. X1 = 35, n, = 254, x2 = 31, n2 = 300, 90% confidence %3D ... The researchers are % confident the difference between the two population proportions, p, - P2, is between and (Use ascending order. Type an integer or decimal rounded to three decimal places as needed.)

Use the given confidence interval to find the margin of error and the sample proportion. (0.596,0.626) E= (Type an integer or a decimal.) p%3D(Type an integer or a decimal.) Type here to search

q21- The z value for a 95% confidence interval estimate is: Select one: a. 2.12. b. 1.82. c. 2.00. d. 1.96.