SOLUTION: A nation-wide study indicated that 91% of college students send or receive text messages on their cell phone. Suppose a random sample of 705 college students is obtained. What is t

Question 846028: A nation-wide study indicated that 91% of college students send or receive text messages on their cell phone. Suppose a random sample of 705 college students is obtained. What is the probability that 640 or fewer of the 705 students send and receive text messages on their cell phone? Would this be correct binomcdf(705,.91,640)=43.8%
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

yes, The syntax is binomcdf(n, p, largest x-value).

P(x ≤ 640) = binomcdf(705, .91, largest 640) = .4381   0r 43.81% 

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