A binomial experiment has the given number of trials n and the given success probability p. n=10, p=0.2

(a) Determine the probability P (2 or fewer). Round the answer to at least three decimal places.
P(2 or fewer)

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It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?

The trigonometric ratios sine and secant are reciprocals of each other