If you live in California, the decision to purchase earthquake insurance is a critical one. An article in the Annals of the Asso
1 answer:
<h2><u>Answer with explanation</u>:</h2>
Let p be the proportion of all L.A. County residences that have earthquake insurance.
Given : The survey revealed that only 141 of 345 randomly selected residences in Los Angeles County were protected by earthquake insurance.
i.e. n= 345
Sample Proportion :
Critical value for 90% confidence interval :
Formula to find the confidence interval for population proportion :
Hence, the 90% confidence the proportion of all L.A. County residences that have earthquake insurance = (0.369, 0.453)
Interpretation : We are 90% confident that the true proportion of all L.A. County residences that have earthquake insurance lies between 0.369 and 0.453 .
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