Problem-1 in order to estimate the difference between the average miles per gallon of two different models of automobiles, samples are taken, and the following information is collected. model a model b sample size 50 55 sample mean 32 35 sample variance 9 10 a) at 95% confidence develop an interval estimate for the difference between the average miles per gallon for the two models. b) is there conclusive evidence to indicate that one model gets a higher mpg than the other? why or why not? explain.

the answer is (-8,-5)

step-by-step explanation:

the endpoint to midpoint is half the length. the length is (-2,-1) so when you are at the midpoint just add it to it to find your answer -6+(-2)= -8 and -4+(-1)=-5 so (-8,-5)

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: