Which expressions are equivalent to 7^8 * 7? Select all that apply a: 7^3 * 7^3 b: 7^18 / 7^9 c: (7^3)^3 d: 7^4 + 7^5 e: 7^4 * 7^5

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?