Suppose an automobile manufacturer designed a radically new lightweight engine and wants to recommend the grade of gasoline that will have the best fuel economy. the four grades are regular, economy, premium, and super premium. the test car made three runs on the test track using each of the four different grades of gasoline (i. e there were a total of 12 test runs). the miles per gallon were recorded for each grade. at the 0.05 level, what is the critical value of f used to test the hypothesis that the miles per gallon for each fuel are the same

Which conjunction is disjunction is equivalent to the given absolute value inequality? |x+2|< 18

Draw a scaled copy of the circle using a scale factor of 2

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size.it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?