Use a Calculator to Give the Value to the Nearest $$\theta = \cos ^ { - 1 } ( - 0.3907 )$$

question 56

Multiple Choice

Use a calculator to give the value to the nearest degree.
- $$\theta = \cos ^ { - 1 } ( - 0.3907 )$$

• A) \(- 67 ^ { \circ }\)
• B) \(113 ^ { \circ }\)
• C) \(110 ^ { \circ }\)
• D) \(115 ^ { \circ }\)

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Definitions:

Calculated Value

A numeric value derived from mathematical operations on data or parameters.

Population Variances

A measure of the dispersion of all the values in a population, reflecting how much the individuals within the population differ from the population mean.

Equal Variances

An assumption in certain statistical tests that the variance within each of the groups or samples is the same across all groups or samples.

Random Samples

Samples chosen in such a way that each member of the population has an equal chance of being included.