Ingrid gets two - thirds of her essay typed in 30 minutes. The equation 2/3×=30 can be used to find out how long it will take her to type her essay. Solve the equation to find the total number of minutes it takes for Ingrid to write the essay. Use numbers and words to explain how to solve 2/3×=30

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?