Janelle is ordering materials for beaded bracelets. band beads charges $0.12 per bead with a shipping cost of $3.25. jewels by jo charges $0.25 per bead with no shipping costs. when would the costs be the same?

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?