The proportions of defective parts produced by two machines were compared, and the following data were collected. Determine a 98% confidence interval for p1 – p2. (Give your answers correct to three decimal places.) Machine 1: n = 159; number of defective parts = 15 Machine 2: n = 159; number of defective parts = 4
Lower Limit
Upper Limit
The proportions of defective parts produced by two machines were compared, and the following data were collected.
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