Mathematics, 14.05.2021 02:00 zafarm2oxgpmx
A recent survey of 252 customers, selected at random from a database with 12,861 customers, found that 208 are satisfied with the service they are receiving. Find the upper bound of a 99% confidence interval for the percentage satisfied for all customers in the database.
Answers: 2
, and a confidence level of 
, we have the following confidence interval of proportions.
.
, z is the value of Z that has a pvalue of 
, so 
. 
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A recent survey of 252 customers, selected at random from a database with 12,861 customers, found th...
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