(Solution Library) Battery Voltage. Two brands of batteries were tested and their voltage is compared. The data follow. Find the 95% confidence interval of
Question: Battery Voltage. Two brands of batteries were tested and their voltage is compared. The data follow. Find the 95% confidence interval of the true difference in the means. Assume that both variables are normally distributed.
Brand X Brand Y
X1 = 9.2 volts X2 = 8.8 volts
o 1 = 0.3 volt o 2 = 0.1 volt
n1 = 27 n2 = 30
Deliverable: Word Document 
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Solution: What is the total area under the standard normal distribution
(Step-by-Step) To the right of z =
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Confidence Interval for Mean Calculator for Unknown Standard Deviation - MathCracker.com