SupposeX1,...,X20are iidNor(μx,σ2),Y1,...,Y20are iid Nor(μy,σ2),and all of theX′isare independent of all of theY′is. Further suppose thatX¯¯¯¯=23,S2x=5184,Y¯¯¯¯=−11,and S2y=900.Find a 95% two-sided confidence interval on the ratio of the population variancesσ2x/σ2y

Which description is represented by a discrete graph? kiley bought a platter for $19 and several matching bowls that were $8 each. what is the total cost before tax? the temperature at 9 a.m. was 83° f and is heating up at an average rate of 6°f per hour. what is the temperature x hours later? juan ate an egg with 78 calories and some cereal with 110 calories per serving for breakfast. what is the total amount of calories he consumed? a bottle contained 2,000 ml of liquid and is being poured out at an average rate of 300 ml per second. how much liquid is left in the bottle after x seconds?