Waiting Time Is A Critical Issue At Fast Food Chains One Fast Food Chain Studied The Waiting Time For Breakfast And The 1 (41.23 KiB) Viewed 30 times
Waiting Time Is A Critical Issue At Fast Food Chains One Fast Food Chain Studied The Waiting Time For Breakfast And The 2 (24.75 KiB) Viewed 30 times
Waiting time is a critical issue at fast-food chains. One fast-food chain studied the waiting time for breakfast and the waiting time for lunch. In a sample of 11 of the chain's restaurants, the standard deviation of the waiting time for lunch was 4.4 minutes. In a sample of 9 of the chain's restaurants, the standard deviation of the waiting time for breakfast was 1.9 minutes. At the 0.05 significance level, is there more variation in the waiting time for lunch than for breakfast? a. From the choices below, enter the letter corresponding to the correct null and alternate hypotheses. B A. Ho: 022 0²/ H₁:0² <0 Ho: 02 ≤ 0²/ H₁:02 > 0 Ho:02 = 0² H₁:02/02/2 b. From the choices below, enter the letter corresponding to the correct test statistic and its formula. F= B. F= c. x² = B. C. MST MSE ((fo-fe)² fe
c. From the choices below, enter the letter corresponding to the decision rule. C A. Reject Ho if F > 5.81 B. Reject Ho if F > 5.06 C. Reject HQ if F > 3.35 D. Reject HQ if F >3.07 d. Calculate the value of the test statistic, rounded to two decimal places. e. From the choices below, enter the letter corresponding to to the correct decision. A A. Reject HQ. B. Do not reject Ho. f. From the choices below, enter the letter corresponding to the correct answer to the question asked in the problem. A A. Yes, there is more variation in the waiting time for lunch than for breakfast. B. No, there is not more variation in the waiting time for lunch than for breakfast.
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