A researcher is interested in conducting a mail survey. He finds out that there is a 40% response rate to such surveys. If a survey is mailed to 5 people, what is the probability that at least one responds?   -Binomial Distribution

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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.