Sara walked down 35 steps, and then walked up 32 steps. which expression represents the total number of steps sara walked? a) 35 - 32 b) |35 - 32| c) 32 - 35 d) |32 - (-35)|

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?