Mathematics, 16.06.2021 21:40 kraigstlistt
It is believed that 25% of U. S. homes have a direct satellite television receiver. How large a sample is necessary to estimate the true population of homes which do with 95% confidence and within 3 percentage points?
Answers: 2
, and a confidence level of 
, we have the following confidence interval of proportions.
.
, z is the value of Z that has a p-value of 
, so 
. 
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It is believed that 25% of U. S. homes have a direct satellite television receiver. How large a samp...
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