Mcq on confidence level, In a sample of 855 bartenders, 48%

Mcq on confidence level

Reference no: EM1393945

In a sample of 855 bartenders, 48% heard complaints from persons about work. If the margin of error was 4.4%, what was the confidence level that was used?

a. 99%
b. 90%
c. 95%
d. 98%

Reference no: EM1393945

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