Use the Traditional Method to Test the Given Hypothesis $$\begin{array} { l l l l l l l } 115 & 128 & 107 & 109 & 116 & 124 & 135 \\127 & 115 & 104 & 118 & 126 & 129 & 133\end{array}$$

question 26

Essay

Use the traditional method to test the given hypothesis. Assume that the population is normally
distributed and that the sample has been randomly selected. For randomly selected adults, IQ
scores are normally distributed with a standard deviation of 15. The scores of 14 randomly
selected college students are listed below. Use a 0.10 significance level to test the claim that
the standard deviation of IQ scores of college students is less than 15. Round the sample
standard deviation to three decimal places. $$\begin{array} { l l l l l l l } 115 & 128 & 107 & 109 & 116 & 124 & 135 \\127 & 115 & 104 & 118 & 126 & 129 & 133\end{array}$$

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Definitions:

Servicemen

Members of the armed forces who are serving their country, including personnel from the army, navy, air force, and other military branches.

Black Recruits

African American individuals who were enlisted into military service, often highlighting their participation in conflicts such as the Civil War and World Wars despite facing discrimination.

Union Army

The military land force that fought for the Northern states during the American Civil War, opposing the Confederate Army.

Added Manpower

An increase in the number of workers or employees within an organization or project, typically aimed at enhancing productivity or meeting higher demands.