The following are the annual salaries of20

chief executive officers of major companies. (The salaries are written in thousands of dollars.)

743,767,542,248,315,609,519,633,452,814,428,338,495,224,723,204,653,790,586,84

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Find25

^thand90

^thpercentilesfor these salaries.

(If necessary, consult alist of formulas.)

(a)The25

^thpercentile:thousand

dollars

(b)The90

^thpercentile:thousand

dollars