The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 257.3 and a standard deviation of 64.1. (All units are 1000 cells/uL.) Usin the empirical rule, find each approximate percentage below. a. What is the approximate percentage of women with platelet counts within 1 standard deviation of the mean, or between 193.2 and 321.4? b. What is the approximate percentage of women with platelet counts between 129.1 and 385.5?

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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.