Answered: 5. An airline recorded the number of on-time arrivals for a sample of 100 flights each day. The boxplot below summarizes the recorded data for one vear.

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Question

下午1:20 4月20日周三
7 62%
6. An airline recorded the number of on-time arrivals for a sample of 100 flights each day. The boxplot below
summarizes the recorded data for one year.
70
80
90
100
Number of On-Time Arrivals
Based on the boxplot, which of the following statements must be true?
(A) The range of the number of on-time arrivals is greater than 90.
(B) The interquartile range of the number of on-time arrivals is 22.
(C) The number of days that had at least 80 on-time arrivals is greater than the number of days that had at most
76 on-time arrivals.
(D) The number of days that had from 76 to 80 on-time arrivals is equal to the number of days that had at most
76 on-time arrivals.
(E) The difference between the median and the lower quartile for the number of on-time arrivals is less than 2.

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