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Construct a 99% confidence interval to estimate the population mean with x = 118 and a=28 for the following sample sizes. a) n = 31 b)n = 43 c) n = 63 a) With 99% confidence, when n=31, the population mean is between the lower limit of and the upper limit of (Round to two decimal places as needed.)

Construct a 98% confidence interval to estimate the population mean with x=58 and a = 11 for the following sample sizes. a) n = 31 b)n = 42 c) n = 62 Click the icon to view the cumulative probabilities for the standard normal distribution. ... a) With 98% confidence, when n=31, the population mean is between the lower limit of and the upper limit of (Round to two decimal places as needed.)

Determine the margin of error for a confidence interval to estimate the population mean with n=42 and a=48 for the following confidence levels. a) 92% b) 95% c) 98% Click the icon to view the cumulative probabilities for the standard normal distribution. a) With a 92% confidence level, the margin of error is 0 (Round to two decimal places as needed.) GOIZE

Banking fees have received much attention during the recent economic recession as banks look for ways to recover from the crisis. A sample of 40 customers paid an average fee of $12.01 per month on their interest-bearing checking accounts. Assume the population standard deviation is $1.87. Complete parts a and b below COLD a. Construct a 90% confidence interval to estimate the average fee for the population. The 90% confidence interval has a lower limit of $ (Round to the nearest cent as needed.) and an upper limit of $

The average selling price of a smartphone purchased by a random sample of 43 customers was $308. Assume the population standard deviation was $34. a. Construct a 95% confidence interval to estimate the average selling price in the population with this sample. b. What is the margin of error for this interval? a. The 95% confidence interval has a lower limit of Sand an upper limit of $ (Round to the nearest cent as needed.)

Construct a 95% confidence interval to estimate the population mean using the data below. What assumptions need to be made about this population? x=37 s=84 n=26 Click here to view page 1 of the critical t-score table. Click here to view page 2 of the critical t-score table. The 95% confidence interval for the population mean is from a lower limit of to an upper limit of (Round to two decimal places as needed.)

Construct an 80% confidence interval to estimate the population mean when x=51 and s= 13.4 for the sample sizes below. a) n=18 b) n=45 c) n=65 a) The 80% confidence interval for the population mean when n=18 is from a lower limit of to an upper limit of (Round to two decimal places as needed.)

Determine the margin of error for a confidence interval to estimate the population mean with n=23 and s= 15.2 for the confidence levels below. a) 80% b) 90% c) 99% a) The margin of error for an 80% confidence interval is (Round to two decimal places as needed.) OTT

Construct a 90% confidence interval to estimate the population proportion with a sample proportion equal to 0.28 and a sample size equal to 125. Click the icon to view a portion of the Cumulative Probabilities for the Standard Normal Distribution table. A 90% confidence interval estimates that the population proportion is between a lower limit of and an upper limit of (Round to three decimal places as needed.)

Construct a 99% confidence interval to estimate the population proportion with a sample proportion equal to 0.50 and a sample size equal to 350. Click the icon to view a portion of the Cumulative Probabilities for the Standard Normal Distribution table. A 99% confidence interval estimates that the population proportion is between a lower limit of and an upper limit of (Round to three decimal places as needed.)

Construct a 95% confidence interval to estimate the population proportion with a sample proportion equal to 0.90 and a sample size equal to 350. Click the icon to view a portion of the Cumulative Probabilities for the Standard Normal Distribution table. A 95% confidence interval estimates that the population proportion is between a lower limit of and an upper limit of (Round to three decimal places as needed.).

TE Determine the margin of error for a confidence interval to estimate the population proportion for the following confidence levels with a sample proportion equal to 0.25 and n=120. a. 90% b. 95% c. 99% Click the loon to view a portion of the Cumulative Probabilities for the Standard Normal Distribution table. D a. The margin of error for a confidence interval to estimate the population proportion for the 90% confidence level is (Round to three decimal places as needed.)