1. Suppose we have a bag with 20 marbles in it: 12 red, 6 blue, and 2 white. a. If we reach in and take a single marble out, what is the probability that it is blue? b. If we reach in and take a single marble out, what is the probability that it is blue or red? C. If we reach in and take a single marble out, what is the probability that it is not red? d. What is the probability of selecting two blue marbles in a row if we replace the first marble before selecting the second marble? e. What is the probability of selecting two red marbles in a row if we do not replace the first marble before selecting the second marble?

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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.