Given a certain 98% confidence interval is (0.05,0.29), what is the exact value of the margin of error?  HINT: It's useful to find the estimate from the sample statistic, first.

Suppose that your sample size is 30 and that you wish to construct a 95% confidence interval. Your sample standard deviation is 40.9. Estimate your margin of error (MOE) using this information and the t-distribution table. Estimate your response to the first decimal point.

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 given confidence interval to find the margin of error and the sample proportion. (0.705,0.733) E = (Type an integer or a decimal.)

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.)

Next question If a sample proportion is 0.68, which of the following could be a 90% confidence interval for the population proportion? ..... Select all that apply. A. Lower bound: 0.59; Upper bound: 0.77 B. Lower bound: 0.66; Upper bound: 0.70 OC. Lower bound: 0.50; Upper bound: 0.77 D. Lower bound: 0.77; Upper bound: 0.95 E. Lower bound: 0.67; Upper bound: 0.71 F3 F4 F5 F7 F8 24 4. %23 2 3. 6. Left control option command

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

The heights of young American women, in inches, are Normally distributed with mean and standard deviation = 1.6. The sample mean is 66 and the sample size is 10. The confidence is 66.00 plus or minus 0.99 for a 95% confidence interval. Question: What should the sample size be if the margin of error is desired to be plus or minus 0.5 inches remaining at a 95% confidence interval ?

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.