An Investor Wants to Determine How Much Interest He Must

question 33

Essay

An investor wants to determine how much interest he must earn to be able to make the payments on a 10-year mortgage which has increasing annual payments. The problem is summarized in the accompanying spreadsheet. The investor has enough money to make an initial investment of $12,000 and hopes he can earn 18% on his investments. He would like to know how low his annual return can be and still allow him to make his payments from interest income.What formulas should go in cells B7:F7 of the spreadsheet for this problem?

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Definitions:

Sample Means

Refers to the average values computed from multiple samples from a population, usually to estimate the population mean.

Pooled Variance

combines the variances of two or more groups, assuming they have the same underlying variance, to estimate a common variance.

Common Variance

The variance shared by two or more variables, often used in the analysis of variance.

Weighted Average

An average that accounts for the different weights or importance of certain factors or quantities in the dataset.