Asked Mar 25, 2020
  1. A random sample of 5222 permanent dwellings on the entire Navajo Indian Reservation showed that 1619 were traditional Navajo hogans (Navajo Architecture:  Forms, History, Distributions, by Jett and Spencer University of Arizona Press.)
  2. Let p be the proportion of all permanent dwellings on the entire Navajo Reservation that are traditional hogans.  Find a point estimate for p.
  3. Find a 99% confidence interval for p.  Give a brief interpretation of the confidence interval.

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