According to a study by the National Institute on Alcohol Abuse and Alcoholism, 19% of college students between the ages of 18 and 24 meet the criteria for alcohol abuse or dependence.   Coker University wants to determine whether it has a lower, average, or higher rate of alcohol abuse than the national average. A random sample of 48 students is selected, and evaluated for signs of alcohol abuse or dependence.   a. Identify n for the binomial experiment.     b. Identify p for the binomial experiment.     c. Find the probability that 2 or fewer of the students in the sample exhibit signs of alcohol abuse or dependence. Round your answer to 4 decimal places

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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.