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

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

b) 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.

c) 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 procedures and employees is recommended.

d) None of the answers match my calculations.

e) 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.

Hint: Compute the confidence limits and decide if the confidence interval rejects 5 minutes?

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