AP Statistics Chapter 9 Quiz 1, Study Guides, Projects, Research of Mathematics

AP Statistics Chapter 9 Quiz 1 with Answer Key

Typology: Study Guides, Projects, Research

2023/2024

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SG9.1 AP Statistics Name: 1. For each of the following settings, define the parameter of interest and write the appropriate null and alternative hypotheses for the test that is described. (a) The mean weight of loaves of bread produced at the bakery where you work is supposed to be one pound. You are the supervisor of quality control at the bakery, and you are concerned that new personnel are producing loaves that have a mean weight of more than one pound. (b) According to the Humane Society, 33% of households in the United States own at least one cat. You are interested in determining whether the proportion of households of the students at your school that own at least one cat is different from the national proportion. 2. Consider the bakery problem in question I(a), Suppose you weigh an SRS of bread loaves and find that the mean weight is 1.025 pounds, which yields a P-value of 0.086, (a) Interpret the P-value in the context of the problem, (b) What conclusion would you draw at the @ = 0.05 level? At the a = 0.10 level?