The time t (in minutes) needed to read an
article appearing on a foreign-language placement test is given by
the probability density function
f(t)
= 0.012t2 − 0.0012t3, 0 ≤ t ≤ 10.
For a test taker chosen at random, find the probability that
this person takes 7 minutes or more to read the article.
(Round your answer to four decimal places.)
The time t (in minutes) needed to read an article appearing on a foreign-language placement test is given by the probabi
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The time t (in minutes) needed to read an article appearing on a foreign-language placement test is given by the probabi
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