The Irradiation of Food to Destroy Bacteria Is an Increasingly

question 1

Short Answer

The irradiation of food to destroy bacteria is an increasingly common practice. In order to determine which one of two methods of irradiation is best, a scientist took a random sample of 100 one-kilogram packages of minced meat and subjected 50 of them to irradiation method 1 and the remaining 50 to irradiation method 2. The bacteria counts were measured and the following statistics were computed. The scientist noted that the data were normally distributed. $$\begin{array} { | c | c | } \hline \text { Method 1 } & \text { Method 2 } \\\hline \bar { x } _ { 1 } = 86 & \bar { x } _ { 2 } = 98 \\\hline s _ { 1 } ^ { 2 } = 324 & s _ { 2 } ^ { 2 } = 841 \\\hline\end{array}$$ Estimate with 95% confidence the mean bacteria count with method 2.

Grasp the concept of sensory adaptation and how it affects perception.

Explain the structure and function of the inner and middle ear and its relevance to hearing.

Understand the pathology behind common sensory disorders like glaucoma.

Understand the associations between sensory problems and their physiological bases.

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Definitions:

Short Bones

Bones that are as wide as they are long, providing support and stability with little movement, found in the wrist and ankle.

Hypersecretion

The excessive production and release of a substance, such as hormones or enzymes, by a gland.

Testosterone

A primary male sex hormone responsible for the development of male reproductive tissues and the promotion of secondary sexual characteristics.

Growth Hormone

A hormone secreted by the pituitary gland that stimulates growth, cell reproduction, and cell regeneration.