Exhibit 7-7: a Group of Curriculum Designers Has Developed a New

question 104

Multiple Choice

Exhibit 7-7: A group of curriculum designers has developed a new system for teaching phonics to young children.They randomly selected 24 kindergarten students to receive either the old phonics method or the new phonics method.The designers realized that kindergartens have morning and afternoon classes, so they wanted to build this factor into the research design.The following is the mean, standard deviation, and number for each group.
$\begin{array}{lll}\text { Morning } & {\text { Old }}{} & {\text { New }}{} \\ & 16.33 & 13.50 \\ &1.03 & 2.74 \\& 6 & 6 \\ \text { Afternoon } & 13.17 & 16.83 \\ & 3.55 & 2.14 \\ & 6 & 6\end{array}$
The following is an incomplete summary table of the analysis of variance:
$\begin{array}{ll}\underline { \text { Source }} & \underline { \text { SS }} & \underline { \text { df }} & \underline { \text { MS}} & \underline { \text { F}}\\\text { Time of Day } & 0.042 \\\text { Lesson Design } & 1.042 \\\text { Interaction }\\\text { Error } & 128.500 \\\text { Total } & 102950\end{array}$
-Refer to Exhibit 7-7.Which sources of variance are significant?

• A) Time of Day
• B) Lesson Design
• C) Interaction
• D) a and b
• E) None of these are true.

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Definitions:

Spinal Cord

A long, thin, tubular bundle of nervous tissue and support cells that extends from the brain, vital for transmitting nerve signals between the brain and the body.

Central Nervous

The Central Nervous System (CNS) consists of the brain and spinal cord, playing a crucial role in controlling bodily functions and processing information.

Somatic Nervous

A component of the peripheral nervous system that controls voluntary movements of the body and transmits sensory and motor information to and from the central nervous system.

Peripheral Nervous

Part of the nervous system consisting of the nerves and ganglia outside of the brain and spinal cord, responsible for connecting the CNS to limbs and organs.