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Unformatted text preview: lore the Sampling Distribution of the Differences in Two Proportions 1 In this activity, !! and !! represent the many sample proportions simulated for the initial and following years, respectively. The corresponding population proportions are p1 and p2. A Do the distributions of proportions for the both years satisfy the conditions for approximate normality: np ≥ 10 and n(1 – p) ≥ 10? Initial Year !! = !! !! = !! 1 − !! = Conditions met? Following Year !! = !! !! = !! 1 − !! = Conditions met? B Do the distributions of sample proportions appear visually to be sampled from approximately normal sampling distributions? C How are the distributions of sample proportions different for these two years? D Is it possible to select two sample proportions (one from each year) that might lead you to conclude that the proportion of people concerned about the effects of global warming had decreased over those years? E Is it possible to select two sample proportions (one from each year) that might lead you to conclude that the proportion of people concerned about the effects of global...
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This document was uploaded on 03/13/2014 for the course MATH 75 at Skyline College.
 Spring '14

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