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In a random sample of 500 light bulbs, 150 of them burned out in less than...

In a random sample of 500 light bulbs, 150 of them burned out in less than 1000 hours. For those light bulbs:

  1. Estimate the value of the population proportion. (Round your answers to 3 decimal places.)
  1. Develop a 90% confidence interval for the population proportion. (Round your answers to 3 decimal places.)
Math   Statistics-And-Probability   
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Answer #1

(a) 0.300

(b) 0.266<p<0.334

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