A $35 - \mathrm { mm }$ Camera Equipped with A $40 - \mathrm { mm }$

question 21

Multiple Choice

A $35 - \mathrm { mm }$ camera equipped with a $40 - \mathrm { mm }$ focal length lens is used to photograph a tree $17 \mathrm {~m}$ tall. If a 32-mm high image of the tree on the CCD sensor is required, how far should the camera lens be from the tree?

• A) \(22 \mathrm {~m}\)
• B) \(26 \mathrm {~m}\)
• C) \(21 \mathrm {~m}\)
• D) \(23 \mathrm {~m}\)
• E) \(24 \mathrm {~m}\)

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Definitions:

Dependent Variable

A variable in scientific research or statistical modeling that is expected to change or respond when another variable (the independent variable) is altered.

Independent Variable

In an experiment, it is the variable that is manipulated or changed to observe its effects on the dependent variable.

Residual Analysis

The analysis of the residuals used to determine whether the assumptions made about the regression model appear to be valid. Residual analysis is also used to identify outliers and influential observations.

Regression Model

A statistical technique used to estimate the relationship between a dependent variable and one or more independent variables.