SOLUTION: 1.Past history reveals that 30% of students who enroll in an online course drop the course before the last day to withdraw without penalty. Answer the following questions for an on

Algebra ->  Probability-and-statistics -> SOLUTION: 1.Past history reveals that 30% of students who enroll in an online course drop the course before the last day to withdraw without penalty. Answer the following questions for an on      Log On


   

Question 220877: 1.Past history reveals that 30% of students who enroll in an online course drop the course before the last day to withdraw without penalty. Answer the following questions for an online class with a beginning enrollment of 20 students.
F.Find the probability that 4 – 8 items students will drop the course
g.Write out the exact Excel function that could be used to answer question f.

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
1.Past history reveals that 30% of students who enroll in an online course drop the course before the last day to withdraw without penalty. Answer the following questions for an online class with a beginning enrollment of 20 students.
F.Find the probability that 4 – 8 students will drop the course
It's binomial with n = 20; p = 0.3 ; 4<=x<=8
binomcdf(20,0.3,8)-binomcdf(20,0.3,3) = 0.7796
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g.Write out the exact Excel function that could be used to answer question f.
I use a TI calculator, not Excel.
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Cheers,
Stan H.