This table shows passenger activity in the world's 30 busiest airports in 2000.

a. Display the data in a histogram.
b. Estimate the total number of passengers who used the 30 airports. Explain any assumptions you make.
c. Estimate the mean usage among the 30 airports in 2000. Mark the mean on your histogram.
d. Sketch a box plot above your histogram. Estimate the five-number summary values. Explain any assumptions you make.

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Number of passengers Number of airports in millions) 25 p<30 30 p< 35 35 p<40 40 S p <45 45 p<50 55 p<60 60 p<65 65 p< 70 70 pく75 80 p <85