Mr li bough a memory card for 138.89 including tax. the card had a sticke at the price of 129.20 what percent tax did he pay

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?

Me i'm timed right now! there's 4 answer

Which equation can be simplified to find the inverse of y = 2x2^2