for further any queries please comment and thank you.
The First National Bank of Wilson has 700 checking account customers. A recent sample of 50...
The First National Bank of Wilson has 660 checking account customers. A recent sample of 40 of these customers showed 36 have a Visa card with the bank. Construct the 98% confidence interval for the proportion of checking account customers who have a Visa card with the bank. (Use z Distribution Table.) (Round your answers to 3 decimal places.) The confidence interval for the proportion is between _______ and .________
The First National Bank of Wilson has 640 checking account customers. A recent sample of 60 of these customers showed 23 have a Visa card with the bank. Construct the 98% confidence interval for the proportion of checking account customers who have a Visa card with the bank. (Use z Distribution Table.) (Round your answers to 3 decimal places.)
The First National Bank of Wilson has 680 checking account customers. A recent sample of 60 of these customers showed 21 have a Visa card with the bank. Construct the 90% confidence interval for the proportion of checking account customers who have a Visa card with the bank. (Use z Distribution Table.) (Round your answers to 3 decimal places.)
The First National Bank of Wilson has 680 checking account customers. A recent sample of 40 of these customers showed 27 have a Visa card with the bank. Construct the 90% confidence interval for the proportion of checking account customers who have a Visa card with the bank. (Use z Distribution Table.) (Round your answers to 3 decimal places.)
Patty, a branch manager of a bank, would like a quick estimate of the mean checking account balance of all checking account customers. A random sample of checking 32 account balances results in a sample mean of $312,590.50 and a standard deviation of $52,100. Calculate and interpret a 95% confidence interval for the mean checking account balance. Round off all answers to two decimal places with complete solutions.
A random sample of 144 checking accounts at a bank showed an average daily balance of $295. The standard deviation of the population is known to be $72. Please answer the following questions: (a) Find the standard error of the mean. (b) Give a point estimate of the population mean. (c) Construct a 95% confidence interval estimates for the mean.
An economist reports that 238 out of a sample of 700 middle-income American households actively participate in the stock market. [You may find it useful to reference the z table.] a. Construct the 95% confidence interval for the proportion of middle-income Americans who actively participate in the stock market. (Round intermediate calculations to at least 4 decimal places. Round "z" value and final answers to 3 decimal places.) b. Can we conclude that the percentage of middle-income Americans who...
7. Computer Action Company sells its customers that products are company. A sample of 50 recent these orders was 70 hours an y sells computers and computer parts by mail. The company assures cts are mailed as soon as possible after an order is placed with the recent orders showed that the mean time taken to mail products for hours and the standard deviations was 16 hours. Construct a 95% confidence interval the office of this company. interval for the...
a-c please 2. A random sample of 144 checking accounts at a bank showed an average daily balance of $295. The standard deviation of the population is known to be $72. Please answer the following questions: (a) Find the standard error of the mean. (b) Give a point estimate of the population mean. (c) Construct a 95% confidence interval estimates for the mean.
A random sample of 80 observations results in 50 successes. [You may find it useful to referen a. Construct the 95% confidence interval for the population proportion of successes. (Round int decimal places. Round "z" value and final answers to 3 decimal places.) Confidence interval b. Construct the 95% confidence interval for the population proportion of failures. (Round inter decimal places. Round "z" value and final answers to 3 decimal places.) Confidence interval to