PETE (Code 1)and HDPE (Code 2)plastics

question 48

Multiple Choice

PETE (code 1) and HDPE (code 2) plastics

• A)can be recycled and made into many useful products.
• B)are biodegradable.
• C)unlike most plastics,are not made from petroleum.
• D)cannot be incinerated with other organic MSW because of their dioxin content.

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Definitions:

Null Hypothesis

In statistics, a hypothesis that there is no significant difference or association between specified populations, any observed difference being due to sampling or experimental error.

Mean Weight

The average mass of an object or collection of objects, obtained by adding their weights together and dividing by the number of objects.

Two Tailed Test

A statistical test used to determine if there are differences in two directions, assessing the possibility of extreme outcomes in both tails of the distribution.

Test-statistic

A value calculated from sample data during hypothesis testing, used to determine whether to reject the null hypothesis.