Multiply the polynomials. (7x2 + 9x + 7)(9x – 4) a. 63x3 + 53x2 + 27x + 28 b. 63x3 + 53x2 + 27x – 28 c. 63x3 + 53x2 + 59x – 28 d. 63x3 + 81x2 + 27x – 28

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?