You are looking at your power bill for the monthyou pay 13 cents per kilowatt-hour. Running a 60 watt light bulb for 1 hour is .06 KWH. If you leave a light on all the time that has 4 light bulbs in it how much would that cost in a 30 day month? Answer in the form of 2.54 without the dollar sign.

Use the given degree of confidence and sample data to construct a confidence interval for the population mean mu . assume that the population has a normal distribution. a laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 185 milligrams with sequals 17.6 milligrams. a confidence interval of 173.8 mgless than muless than 196.2 mg is constructed for the true mean cholesterol content of all such eggs. it was assumed that the population has a normal distribution. what confidence level does this interval represent?