A square image is being enlarged. The original image is a 4 in. x 4 in. square and the new image is a 16 in. x 16 in. square. The scale is 1 in. : . What was the scale factor used to enlarge the image? Use proportions to solve the problem and show all work. Provide a proper label with your answer.

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?