A local TV anchor reported that 60% of all adults are in favor of banning all plastics bottles from school buildings and grounds. An Environmental Science teacher from a very large high school believes that the proportion is less than as what was reported at her school. To investigate, she conducts a simple random sample of 152 students finds that 85 support banning plastic bottles. Perform a significance 0.05, for the proportion of all students at this high school who support banning plastic water bottles. (Show all four steps test, a = process.) Interpret the P-value in context.

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.