Mathematics, 17.07.2020 17:01 rhettnyah
Keisha wants to estimate the percentage of managers at her company that hold an MBA. She surveys 320 managers and finds that 70 hold an MBA. Find the margin of error for the confidence interval for the population proportion with a 90% confidence level.
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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Keisha wants to estimate the percentage of managers at her company that hold an MBA. She surveys 320...
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