Each Night You Measure Your Height Just Before Going to Bed.When

question 4

Multiple Choice

Each night you measure your height just before going to bed.When you arise each morning,you measure your height again and consistently find that you are 1 inch taller than you were the night before but only as tall as you were 24 hours ago! Is what happens to your body in this instance best described as a physical change or a chemical change?

• A)chemical change because it involves your body
• B)physical change because it readily reverses
• C)chemical change because it involves changes in your bone structure
• D)physical change because water expands as it freezes

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Definitions:

Frequency Table

A tabular representation of the number of occurrences of each distinct value in a dataset.

Proportions

A statistical measure expressing the relationship of a part to the whole, typically represented as a fraction or percentage.

Rejection Region

The range of values in hypothesis testing outside of which the null hypothesis is rejected in favor of the alternative hypothesis.

Categorical Variables

Categorical variables are qualitative variables that can take on different categories, but which do not have a natural order or ranking.