Carver Memorial Hospital's Surgeons Have a New Procedure That They

question 7

Multiple Choice

Carver Memorial Hospital's surgeons have a new procedure that they think will decrease the time to perform an appendectomy. A sample of 8 appendectomies using the old method had a mean of 38 minutes with a variance of 36 minutes, while a sample of 10 appendectomies using the experimental method had a mean of 29 minutes with a variance of 16 minutes. For a right-tailed test of equal means (assume equal variances) , the pooled variance is:

• A)14.76
• B)26.00
• C)24.75
• D)27.54

---

Definitions:

Internal Rate

Often referred to as the Internal Rate of Return (IRR), it’s the discount rate that makes the net present value (NPV) of all cash flows from a particular project equal to zero.

Investment Proposals

Formal plans or suggestions put forward for consideration or discussion, especially one concerning financial investment.

Capital Budgeting

The process of planning and evaluating investments in long-term assets, focusing on projects that will generate future profits.

Required Rate

Typically refers to the minimum return rate needed on an investment, considering risk and funding costs.