A bank installed an ATM. After several months of operation, a sample of 100 customers showed the following use of the ATM in a month. Number of Times ATM Used / Frequency
0 / 25
1 / 30
2 /20
3 /10
4 /10
5 /5

a. What is the estimate of proportion of customers who do not use the ATM in a month?

b. Develop 95 percent confidence interval for this estimate. Can the bank be sure that at least 40% of customers will use the ATM?

True or false: banks are required to make electronically deposited funds available on the same day of the deposit

Guardian inc. is trying to develop an asset-financing plan. the firm has $450,000 in temporary current assets and $350,000 in permanent current assets. guardian also has $550,000 in fixed assets. assume a tax rate of 40 percent. a. construct two alternative financing plans for guardian. one of the plans should be conservative, with 70 percent of assets financed by long-term sources, and the other should be aggressive, with only 56.25 percent of assets financed by long-term sources. the current interest rate is 12 percent on long-term funds and 7 percent on short-term financing. compute the annual interest payments under each plan.

The hartman family is saving $400 monthly for ronald's college education. the family anticipates they will need to contribute $20,000 towards his first year of college, which is in 4 years .which best explain s whether the family will have enough money in 4 years ?