Emilio owns a bakery. the number of boxes of cookies he has left on a monday is represented by the function x + y = 42, where y is the number
of boxes of cookies remaining in the bakery and x is the number of hours since he opened the bakery. how many boxes did he have at the start
of business on monday? (note: x20, y0, and y takes only integer values.)

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?