Use a Graphing Utility to Select the Correct Graph of ​

question 21

Multiple Choice

Use a graphing utility to select the correct graph of ​ $y _ { 1 }$ and $y _ { 2 }$ in the same viewing window.Use the graphs to determine whether $y _ { 1 } = y _ { 2 }$ .Explain your reasoning.​ $y _ { 1 } = \cos ( x + 4 ) , y _ { 2 } = \cos x + \cos 4$ ​

• A)​ No, \(y _ { 1 } \neq y _ { 2 }\) because their graphs are different.
• B)​ No, \(y _ { 1 } \neq y _ { 2 }\) because their graphs are Same.
• C)​ Yes, \(y _ { 1 } = y _ { 2 }\) because their graphs are different.
• D)​ Yes, \(y _ { 1 } = y _ { 2 }\) because their graphs are same.
• E)​ No, \(y _ { 1 } = y _ { 2 }\) because their graphs are different.

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Definitions:

Conclusion

The end or finish of an event, process, or text, often summarizing findings or results.

Power Curve

A graphical representation used in statistics to show the probability of rejecting the null hypothesis at various effect sizes.

Power of the Test

The probability that a statistical test will correctly reject a false null hypothesis, indicating the test's ability to detect an effect when there is one.

Confidence Interval Estimate

A range of values derived from sample statistics that is likely to contain the value of an unknown population parameter, with a certain level of confidence.