Question

DOLOLI ILULIIIJ ULLE One benchmark assessed ranged from "Rude (1)" to "Very 7.69 Drive-thru customer service. QSRMagazine.com assessed 1855 drive-thru visits at quick-service restaurants. ichmark assessed was customer service. Responses 1 Rude (1)" to "Very Friendly (5).” The following table breaks down the responses according to two chains studied. I DRVTHRU ne responses according to two of the blogRating Chain 1 2 3 4 5 Taco Bell 0. 5 41 143 119 McDonald's 1 22 55 139 100

Answer 1

solution : Let Ranged from "Rude (0)" to "very friendly (5)". Average rating for these data is appropriate measure. So, Average is the appropriate measure. For comparing the means of the 2 groups. We have to use t-test Se Sample Size is very less So, t-test is appropriate to compare means. c) Tacobell Mean>Ex/n Žy =616 S'D = √ {(x-2) Mc Donald's Mean = Exlm -6314 SD - 4(x-3- S2 = 50:46 S- 58895 d) Ho: Mi - Hz Hii Mi #la t= 71-22 J5 (motion) = 616-6314 -00464 13 759-3(115+115

S² = mist +12 22² n+02-2 = 5158.895175504612 T 5+5-2 -13759.31 - Grilical value at 5%. L.o.'s for 8 dof is (-231,2-31) t-value lies in the interval (-2:31, 2:31) ... There is no difference in the ratings...