The Following Minitab Display Results from a Study in Which

question 74

Essay

The following Minitab display results from a study in which three different teachers taught calculus classes of
five different sizes. The class average was recorded for each class. Assuming no effect from the interaction
between teacher and class size, test the claim that the teacher has no effect on the class average. Use a 0.05
significance level. $$\begin{array} { l r c r c c } \text { Source } & \text { DF } & \text { SS } & \text { MS } & \text { F } & \mathrm { p } \\\text { Teacher } & 2 & 56.93 & 28.47 & 1.018 & 0.404 \\\text { Class Size } & 4 & 672.67 & 168.17 & 6.013 & 0.016 \\\text { Error } & 8 & 223.73 & 27.97 & & \\\text { Total } & 14 & 953.33 & & &\end{array}$$

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Definitions:

Exhalation

The process of releasing air from the lungs through the respiratory tract; a key part of the breathing cycle in aerobic respiration.

Bronchi

The main passageways directly attached to the lungs that allow the passage of air in and out of the lungs.

Alveoli

Tiny air sacs within the lungs where gas exchange between the air and blood occurs.

Dalton's Law

The principle that the total pressure exerted by a mixture of gases is equal to the sum of the pressures that each would exert if it were present alone.