Card 26 / 180: A sample of 196 houses is taken to estimate the average electric usage per month. The sample mean is 2,000 kilowatts per hour, and the population standard deviation is 350 kilowatt hours. What will be the 95% confidence interval for the estimate of the population mean?
A) 1314 kilowatts per hour to 2686 kilowatts per hour
B) 1951 kilowatts per hour to 2049 kilowatts per hour
C) 1998 4 kilowatts per hour to 2001.96 kilowatts per hour
D) 1650 kilowatts per hour to 2350 kilowatts per hour

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