The Princeton Review estimates that 70% of CofC students are in-state students. Assume we take a random sample of 10 CofC students. a) What is the probability that exactly 8 of the students are in-state students? b) What is the probability that 8 or more are in-state students? c) What is the probability that 7 or less are in-state students? Round your answers to 3 decimal places.
The Princeton Review estimates that 70% of CofC students are in-state students. Assume we take a random sample of 10 CofC students. a) What is the probability that exactly 8 of the students are in-state students? b) What is the probability that 8 or more are in-state students? c) What is the probability that 7 or less are in-state students? Round your answers to 3 decimal places.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter6: Ratio, Proportion, And Probability
Section6.7: Probability And Odds
Problem 2C
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The Princeton Review estimates that 70% of CofC students are in-state students. Assume we take a random
sample of 10 CofC students.
a) What is the
b) What is the probability that 8 or more are in-state students?
c) What is the probability that 7 or less are in-state students?
Round your answers to 3 decimal places.
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In Step 2 of the answer, I don't understand how to calculate.
P(X= 8) = 10C8*(0.70)8*(1-0.70)10-8
what is 10C8? where does the number come from?
Then is it multiplied times (0.70)8
(1-0.70)10-8 does this equal (0.30)2?
If you multiply the three numbers you get the probability?
Same goes for step 3
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