A sample pilot survey of 10 executives indicated mean time per week 12 hours with standard deviation of 3 hours the estimate of the mean should be 0.25 hour the level of confidence is 95% how many executives should be surveyed ?

Acorporation a. can use different depreciation methods for tax and financial reporting purposes b. must use the straight - line depreciation method for tax purposes and double declining depreciation method financial reporting purposes c. must use different depreciation method for tax purposes, but strictly mandated depreciation methods for financial reporting purposes d. can use straight- line depreciation method for tax purposes and macrs depreciation method financial reporting purposes