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[Steps Shown] A random sample of size n=121 yielded p#770;=.88 Is the sample size large enough to use the methods of this section to construct a confidence interval

Question: A random sample of size \(n=121\) yielded \(\hat{p}=.88\)

  1. Is the sample size large enough to use the methods of this section to construct a confidence interval for \(p\) ? Explain.
  2. Construct a \(90 \%\) confidence interval for \(p\).
  3. What assumption is necessary to ensure the validity of this confidence interval?

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