QUESTION 15 At the Tyson's Corner mallI, 205 people were observed as they spent their time there. Use the summary provided in the table to find the probability of randomly selecting an adult (i.e., 18 or older) from those that are not shopping. Shapping (H) Walking (W) Browsing (B) Total Child (0-17) (C) 10 12 27 Young Adult (Y) 20 8. 35 63 Older Adult (A) 40 45 30 115 Total 70 58 77 205 5,

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A: Basic concept of discrete probability distribution are used

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A: n1=80, x1=64 n2=60, x2=39 X: people got sick 1: Ate fish 2: Did not eat fish

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.