STATS 250 : Homework 4
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STATS 250 Full Course Notes
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Due: to your lab gsi at start of your lab session feb 16-18. _________________________________________________________________________________________: assessing response bias: many investigators have studied the effect of the wording of questions on surveys. Consider the following two versions of the same question concerning gun control. ________________________: give an estimate of the difference in the population proportions pa pb. Final answer: ( ___________ , ___________ ) respond in favor. Explain your answer: a food processing plant funnels its baked cookies into a sealing machine for packaging. In monitoring the process, the product manager assesses the quality of the seals by the proportion of defectives. The current sealer has a defective rate of about 5% to 7%. The production manager thinks a higher temperature setting on the machine would improve the quality of the seals, so he designs an experiment to compare the two temperature settings (standard versus higher).
