Mathematics, 15.04.2020 04:38 jay1462
You take a random sample of 419 Galaxy phones off an assembly line and find 0.12 proportion to be defective. What is a lower bound for a 90% confidence interval for the proportion of defective Galaxy phones from this assembly line
Answers: 1
, 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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