rcher asked a random sample of students at the library on a Friday night, “How many hours a week do you study?” in an attempt to estimate how much college students study. This method of data collection is biased. Explain w

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A: A company uses a computer to identify 600 most loyal customers from his database then service those…

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A: Givenp=0.24n=140x~Binomial(n=140,p=0.24)P(X=x)=(nx)×px×(1-p)n-x      ; x=0,1,2...,n

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A: The median is the value that separates the higher half of the data from the lower half of the data.

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A: Givenconfidence level = 90%Margin of error(E)=2%=0.02p^=0.45

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Q: Which of the sections had the most variance in the scores?

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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.