Suppose you're deciding where to order a Hawaiian pizza, and waiting time is a concern of yours. You're considering Krazy Karl's Pizza where the average waiting time is 64 minutes, with a standard deviation of 4. 5 minutes. Or, you might call Domino's Pizza where the average waiting time is 54. 6 minutes, with a standard deviation of 8. 1 minutes.
Z-score for a waiting time of
65 minutes at Krazy Karl's: 0. 222
61. 1 minutes at Domino's: 0. 802
1. How many standard deviations away from the average is a wait time of 71. 8 minutes from Krazy Karl's?
2. About 50% of wait times from Krazy Karl's are smaller than ___ minutes
3. About 95% of wait times for Krazy Karl's are approximately between __ minutes and __ minutes.
4. About 99. 7% of wait times for Domino's are approximately between___ minutes and ___ minutes.
5. How long would you have to wait for a Domino's pizza to be in the same percentile as a wait time of 74 minutes from Krazy Karl's? In other words, what wait time for Domino's is "equivalent" to a wait time of 74 minutes from Krazy Karl's?
6. How long would you have to wait for a Krazy Karl's pizza to be in the same percentile as a wait time of 54 minutes from Domino's? In other words, what wait time for Krazy Karl's is "equivalent" to a wait time of 54 minutes from Domino's?