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6. As health insurance costs and the number of disabled employees increase, more companies are firing...

6. As health insurance costs and the number of disabled employees increase, more companies are firing these employees. A survey of 750 employers found that 192 dismiss employees as soon as they go on long-term disability.  

  1. Construct a 90% confidence interval for the proportion of employers who dismiss employees as soon as they go on long-term disability.
  2. Construct a 99% confidence interval for the proportion of employers who dismiss employees as soon as they go on long-term disability
  3. Which interval is wider? Explain why this is true
Math   Statistics-And-Probability   
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Answer #1

Given:

x = 192

n = 750

c) If the confidence level increases, the margin of error also increases, so that the confidence interval becomes wider.

Therefore 99% confidence interval is wider.

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