SOLUTION: During a poll students were asked what classes they are taking now. 72 students are taking history, 60 students are taking statistics and 25 students are taking history and stati

Algebra ->  Probability-and-statistics -> SOLUTION: During a poll students were asked what classes they are taking now. 72 students are taking history, 60 students are taking statistics and 25 students are taking history and stati      Log On


   

Question 328562: During a poll students were asked what classes they are taking now.
72 students are taking history, 60 students are taking statistics and 25 students are taking history and statistics
Based on your numbers calculate PROBABILITY that student in this college takes History class OR takes Statistics class.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
During a poll students were asked what classes they are taking now.
72 students are taking history, 60 students are taking statistics and 25 students are taking history and statistics
Based on your numbers calculate PROBABILITY that student in this college takes History class OR takes Statistics class.
------
N(hist OR stat) = N(hist)+N(stat)-N(hist AND stat)
= 72 + 60 -25
= 107
------
# of students in the college = ?
------
P(taking hist OR stat) = 107/?
===================================
Cheers,
Stan H.