1. Math
  2. Statistics And Probability
  3. we inspected two shipments consisting of na 334 and...

Question: we inspected two shipments consisting of na 334 and...

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4. We inspected two shipments consisting of n 334 and 116 ball bearings from two factories. We found EA 14 defectives in the first shipment and 36 in the second. Test the null hypothesis that the proportions of defective bearings from the two factories are equal. Use a level of significance equal to 0.05. Hint: The test statistic for two sample proportions is, POA)- PCB) (2) O y POA) (B) PCA) POA) where PCA) and POB) are the observed proportions, and (A) n POB) 1- POB) the standard deviations of these proportions. The statistic in (B) nB Equation (2) follows the standard normal distribution

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