Find the Critical Value or Values Of $\chi ^ { 2 }$

question 9

Essay

Find the critical value or values of $\chi ^ { 2 }$ based on the given information.
-The standard deviation of math test scores at one high school is 16.1. A teacher claims that the standard
deviation of the girls' test scores is smaller than 16.1. A random sample of 22 girls results in scores with a
standard deviation of 12.9. Use a significance level of 0.01 to test the teacher's claim.

Recognize efforts and challenges in biodiversity conservation and species identification.

Understand the concept and causes of global warming.

Recognize the different types of pollutants and their sources.

Understand the significance of international agreements in combating environmental issues.

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Definitions:

Elastic

A property of materials that allows them to resume their normal shape after being stretched or compressed.

Adipocyte

Fat cell.

Lipids

A diverse group of organic compounds, including fats, oils, and hormones, that are insoluble in water but soluble in organic solvents, playing key roles in energy storage and cell structure.

Hyaluronic Acid

Hyaluronic acid is a substance that is naturally present in the human body, known for its capacity to attract and retain large amounts of moisture, used in skincare products for its hydrating properties.