In order to efficiently bid a contract, a contractor wants to be 95% confident that his error is less than two hours in estimating the average time it takes to install tile flooring. previous contracts indicate that the standard deviation is 4.5 hours. how large a sample must be selected?
the is also what i have come up with (1.96*4.5/2)x2=1.9448=19.45

Beck company had the following accounts and balances at the end of the year. what is net income or net loss for the year? cash $ 74 comma 000 accounts payable $12,000 common stock $21,000 dividends $12,000 operating expenses $ 13 comma 000 accounts receivable $ 49 comma 000 inventory $ 47 comma 000 longminusterm notes payable $33,000 revenues $ 91 comma 000 salaries payable $ 30 comma 000

Lambert manufacturing has $100,000 to invest in either project a or project b. the following data are available on these projects (ignore income taxes.): project a project b cost of equipment needed now $100,000 $60,000 working capital investment needed now - $40,000 annual cash operating inflows $40,000 $35,000 salvage value of equipment in 6 years $10,000 - both projects will have a useful life of 6 years and the total cost approach to net present value analysis. at the end of 6 years, the working capital investment will be released for use elsewhere. lambert's required rate of return is 14%. the net present value of project b is:

Adding a complementary product to what is currently being produced is a demand management strategy used when: a. capacity exceeds demand for a product that has stable demand. b. price increases have failed to bring about demand management. c. demand exceeds capacity. d. demand exceeds 100 percent. e. the existing product has seasonal or cyclical demand.