Question
a.Find the margin of error E for a 90% confidence interval. (5 points)
Round your answer to the nearest hundredths. .
Round your answer to the nearest hundredths. .
Answers
MathGuru
Margin of error = (z-value)(sd/√n)
Find the z-value using the z-table for 90% confidence. You will need the standard deviation and the sample size to finish the calculation.
Find the z-value using the z-table for 90% confidence. You will need the standard deviation and the sample size to finish the calculation.