Mathematics, 14.05.2021 04:40 Graciesett6879
In a sample of 42 water specimens taken from a construction site, 26 contained detectable levels of lead. Construct a 95% condence interval for the proportion of water specimens that contain detectable levels of lead
Answers: 3
, 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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In a sample of 42 water specimens taken from a construction site, 26 contained detectable levels of...
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