VL2017185000604_AST04.pdf - 1 In the large city A320 per cent of Random sample of 900 School children had defective eye sight In the large city B,15

VL2017185000604_AST04.pdf - 1 In the large city A320 per...

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Unformatted text preview: 1. In the large city A320 per cent of Random sample of 900 School children had defective eye —sight. In the large city B,15 percent of random sample of 1600 school children had the same defective. Is this Difference between the two Proportions Significant? Obtain 95% confidence limits of the difference in the population proportions. 2. A cigarette manufacturing firm claims its brand A of the cigarettes outsells its brand B by 8%.if its found that 42 out sample of 200 smoker prefer brand A and 18 out of another random sample of 100 smokers prefers brand B, test whether the 8% difference is a valid cliam. ...
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  • Winter '17
  • sathya raja shekaran

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