30 points! the steps to simplify the expression are shown below, with one step missing. which is the missing step? a. (5x (-0.70)) x (-20 x 100) b. (5 + (-0.7)) x (-20 + 100) c. (5 x (-20)) + (100 x (0.7)) d. (5 x (-20) x (100 x (-0.7)) d.

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?