Answered step-by-stepBobo's Bad Burgers fast food claims you will be in and out in 5...
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?
Wait Time (minutes) |
2.1 |
8.0 |
4.6 |
2.5 |
3.5 |
4.3 |
3.9 |
5.0 |
6.5 |
3.4 |
5.6 |
6.6 |
4.3 |
4.9 |
9.3 |
5.5 |
4.3 |
11.9 |
5.2 |
4.8 |
5.2 |
7.8 |
8.0 |
4.6 |
4.0 |
5.9 |
8.7 |
3.1 |
4.9 |
11.6 |
A) 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.
B) The confidence limits (4.77,6.58) support the claim of 5 minutes. 5 falls inbetween the confidence limits. Bobo's performance meets the expectation.
C) None of the answers match my calculations.
D) 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.
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.
Answer & Explanation
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