A television sports commentator wants to estimate the proportion of citizens who "follow professional football." Complete parts (a) through (c). Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) What sample size should be obtained if he wants to be within 3 percentage points with 94% confidence if he uses an estimate of 48% obtain- The sample size is (Round up to the nearest integer.) (b) What sample size should be obtained if he wants to be within 3 percentage points with 94% confidence if he does not use any prior estimate The sample size is (Round up to the nearest integer.) (c) Why are the results from parts (a) and (b) so close? 1000/

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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.