5n+3=18
Please help with an explanation as well​

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

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?

Pls what is the relative minimum of the function? enter your answer in the box