Ihave a question to ask and its which is least valid way to simulate how many boys and girls are in a random sample of 20 students from a school population that is half boys and half girls? a flip a coin 20 x (time is x) assigning one outcome to boys and the other girls. b drop a coin all at once count the number of each outcome . c count how many boys and girls are in your math class of each and use a proportion. d have a calculator generate 20 random integers and count the number of even and odd integers. you to me.

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?