In a Completely Randomized Design Involving Three Treatments, the Following

question 36

Multiple Choice

In a completely randomized design involving three treatments, the following information is provided: Treatment 1
$\begin{array} { l } & \text {Treatment 1 }& \text {Treatment 2 }& \text {Treatment 3 }\\\hline \text {Sample size }&5&10&5\\\text { Sample mean }&4&8&9\\\end{array}$

?
The overall mean for all the treatments is ______.

• A) 7.00
• B) 6.67
• C) 7.25
• D) 4.89

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Definitions:

Osteoporosis

A condition that results in weakened bones, making them fragile and more prone to fractures, often due to decreased bone mass and density.

Middle Adulthood

A stage in human development generally considered to occur approximately between the ages of 40 and 65, marked by the achievement of personal and professional goals as well as the realization of one's own mortality.

Presbycusis

Presbycusis is the gradual loss of hearing that occurs as people age, typically affecting the ability to hear higher frequencies first.

Middle Adulthood

A developmental period ranging approximately from 40 to 65 years of age, often characterized by stability in career, relationships, and sense of self.