Marketing companies are interested in knowing the population percent of women who make the majority of household purchasing decisions. Suppose a marketing company did do a survey. They randomly surveyed 200 households and found that in 120 of them, the woman made the majority of the purchasing decisions. We are interested in the population proportion of households where women make the majority of the purchasing decisions. Which distribution should you use for this problem?

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Q: 18. Marketing companies are interested in knowing the population percent of women who make the…

A: Solution-: We have n=200,X120 We find the distribution of p^

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Q: We want to check if each model of a product is equally preferred by our customers.   Model Number…

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A: p1= 0.8, n1=170 p2 = 0.4, n2 =50

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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.