Six Second Grade Students Tried Tossing a Ball into a Basket

question 18

Multiple Choice

Six second grade students tried tossing a ball into a basket ten times each.Their teacher then suggested a different way of tossing the ball, and the six students tried again.The
Number of successful tosses, before and after the teacher's added instruction, are shown
Below. Ignoring the differences of 0, the signed rank of child A is:

• A)+4
• B)+3.5
• C)-3
• D)-3.5

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Definitions:

Compound

Molecule that has atoms of more than one element.

Molecule

The smallest unit of a chemical compound that can exist; composed of two or more atoms bonded together.

Orbital Space

The region of space around the Earth where artificial satellites and spacecrafts orbit, influenced by Earth's gravity.

Energy Level

A specific quantized state of energy that an electron in an atom can have.