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 640 checking account customers. A recent sample of 60...
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 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 700 checking account customers. A recent sample of 50 of these customers showed 29 have a Visa card with the bank. Construct the 95% 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.) Confidence interval for the proportion is between
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.
Candidate A claims he is getting a 60% positive approval rating. A recent poll has candidate A polling a 55% approval rating based on a sample of 600 voters (meaning 330 voters said they were approving of candidate A). Construct a 95% proportion confidence interval based on this data and determine whether the data supports the 60% claim. Start by using the binomial distribution (p + q)n = 1, and x = np. What is n? What is x? What...
El Gato Painting Company maintains a checking account at American Bank. Bank statements are prepared at the end of each month. The November 30, 2021, reconciliation of the bank balance is as follows: Balance per bank, November 30 $ 3,241 Add: Deposits outstanding 1,210 Less: Checks outstanding #363 $ 124 #365 202 #380 57 #381 87 #382 350 (820 ) Adjusted balance per bank, November 30 $ 3,631 The company’s general ledger checking account showed the following for December: Balance,...
you extract a sample of 115 students from this university. The sample proportion is the proportion of students in this sample who live on campus. The standard deviation of the sampling distribution of this sample proportion, rounded to four decimal places, is: 5. A random sample of 82 customers, who visited a department store, spent an average of $71 at this store. Suppose the standard deviation ofexpenditures at this store is σ. $19. The 98% confidence interval for the population...
El Gato Painting Company maintains a checking account at American Bank. Bank statements are prepared at the end of each month. The November 30, 2021, reconciliation of the bank balance is as follows: $3,241 1,210 Balance per bank, November 30 Add: Deposits outstanding Less: Checks outstanding #363 #365 #380 #381 #382 Adjusted balance per bank, November 30 $ 124 202 57 87 350 (820) $3,631 The company's general ledger checking account showed the following for December: Balance, December 1 Receipts...
3 Construct a 90% confidence interval for the following random sample of Lucas Barrett's golf scores for a particular golf course he played so that he can figure out his true (population) aver 95 92 95 99 92 84 95 94 95 86 (hint: Use T-distribution table. Formula Interval estimate of a population mean when stan age score for the dared deviation is unknown) 4 The auto industry relies heavily on 0% financing to entice customers to purchase cars. In...