The Editors Report in the November 2003 issue of Technometrics provides the following information regarding the length

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The Editor€™s Report in the November 2003 issue of Technometrics provides the following information regarding the length of time taken to review articles that were submitted for publication during the year 2002. A few articles took longer than 9 months to review, these are omitted from the table.

Number of Articles Time (months) 0-<1 1-< 2 45 17 2-< 3 3-< 4 4-< 5 18 19 12 14 13 5-< 6 6-< 7 7-< 8 22 11 8-< 9

a. Construct a histogram for these data.

b. Which class interval contains the median review time?

c. Which class interval contains the first quartile of the review times?

d. Which class interval contains the third quartile of the review times?

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