Model the Curve with a Cosine Function $P = \frac { 1 } { 6 }$

question 56

Multiple Choice

Model the curve with a cosine function.
Note that the period of the curve is $P = \frac { 1 } { 6 }$ and its range is $[ - 1,1 ]$ .

• A) \(f ( x ) = \cos ( 12 x )\)
• B) \(f ( x ) = \cos \left( \frac { \pi x } { 12 } \right)\)
• C) \(f ( x ) = \cos ( 12 \pi x )\)
• D) \(f ( x ) = 12 \cos ( \pi x )\)
• E) \(f ( x ) = \cos \left( \frac { x } { 12 } \right)\)

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Definitions:

Confidence Interval

An interval of values, sourced from statistical sampling, that is likely to maintain the value of a covert population parameter.

Population Variance

The variance calculated from the entire population of data points, providing a measure of how much the data points in the population differ from the mean.

Alternative Hypothesis

The hypothesis that proposes a difference or relationship exists among groups or variables, opposite to the null hypothesis.

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true, used as a measure of the threshold of statistical significance.