Wait Time (minutes) 1.1 6.8 1.9 0.1 0.4 3.1 1.9 2.0 5.1 1.3 3.6 3.6 2.7 1.9 7.5 3.8 2.3 9.2 3.0 3.3 1.8 4.9 6.0 4.1 1.8 5.7 6.7 2.4 3.3 8.6

Question

Bobo's fast food claims you will be in and out in 5 minutes. To test this claim, time in minutes from entering and receiving the order was secretly recorded. The results are documented in the data above. At a 95% confidence level, does the confidence interval support Bobo's claim?

Choose the correct answer.

A. The confidence limits (4.77,6.58) support the claim of 5 minutes. 5 falls in between the confidence limits. Bobo's performance meets the expectation.

B. The confidence limits (2.77,4.54) reject the claim of 5 minutes. 5 is greater than the upper confidence limit. Bobo's performance is exemplary.

C. The confidence limits (1.62,3.21) reject the claim of 5 minutes. 5 is greater than the upper confidence limit. Performance at Bobo is incredible.

D. None of the answers match my calculations.

E. The confidence limits (6.79,8.56) reject the claim of 5 minutes. 5 is less than the lower confidence limit. Audit of Bobo's procedure and employees is recommend.