The Sample Size Needed to Estimate a Population Mean Within

question 134

Multiple Choice

The sample size needed to estimate a population mean within 2 units with a 95% confidence when the population standard deviation equals 8 is

• A)62
• B)61
• C)8
• D)None of these choices.

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Definitions:

Internal Rate of Return (IRR)

IRR is a financial metric used to estimate the profitability of investments, calculated as the rate of return that sets the net present value of all cash flows from a particular project to zero.

Payback Period

The duration required for an investment to recover its initial outlay, calculated by dividing the initial investment by the annual cash inflows.

Time Value of Money

The concept that money available now is worth more than the same amount in the future due to its earning capacity.

Discounted Payback Method

A capital budgeting approach that calculates the time required to recoup the cost of an investment, considering the time value of money.