Consider a group of people who have received treatment for a disease such as cancer. let be the survival time, the number of years a person lives after receiving treatment. the density function giving the distribution of is ()=^(−) for some positive constant , and the cumulative distribution function is ()=∫ think carefully about what the practical meaning of () is, being sure that you can put it into words.

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?