(a) Construct a 95% confidence interval about µ if the sample size, n, is 34. Lower bound:; Upper bound: (Use ascending order. Round to two decimal places as needed.) (b) Construct a 95% confidence interval about μ if the sample size, n, is 61. Lower bound: Upper bound: (Use ascending order. Round to two decimal places as needed.) How does increasing the sample size affect the margin of error, E? O A. The margin of error does not change. O B. The margin of error decreases. OC. The margin of error increases. (c) Construct a 99% confidence interval about µ if the sample size, n, is 34.

If n = 580 and X = 464, construct a 90% confidence interval for the population proportion, p.Give your answers to three decimals______< p < ______

Use the sample information. X = 40, 0 = 4, and n= 20 to calculate the following confidence intervals assuming the sample is from a normal population. A.  90% confidence from____to____ (Round 4 decimal places.) B.  95% confidence interval is from_____to_____ (Round 4 decimal places.) C.  99% confidence interval is from______to_____ (Round 4 decimal places.) D.  Describe how the intervals change as you increase the confidence level. A.  The interval gets narrower as the confidence level increases B.  The interval gets wider as a confidence level decreases C.  The interval gets wider as a confidence level increases D.  The interval stays the same as the confidence level increases

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.)

What is one property of a stationary time series?   Question 23 options:   The datapoints demonstrate a clear seasonal pattern   The mean remains constant over time   It is plotted as a straight horizontal line   It demonstrates an upward trend

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

possible In a random sample of twelve people, the mean driving distance to work was 18.9 miles and the standard deviation was 6.3 miles. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 95% confidence interval for the population mean u. Interpret the results. Identify the margin of error. (Round to one decimal place as needed.) Construct a 95% confidence interval for the population mean. (Round to one decimal place as needed.) Interpret the results. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) O A. It can be said that % of the population has a driving distance to work (in miles) that is hetween the interval's endpoints li

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