70% of all students at a college still need to take another math class. If 43 students are randomly selected, find the probability that a. Exactly 30 of them need to take another math class.  b. At most 29 of them need to take another math class.  c. At least 31 of them need to take another math class.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.8: Probabilities Of Disjoint And Overlapping Events
Problem 2C
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70% of all students at a college still need to take another math class. If 43 students are randomly selected, find the probability that

a. Exactly 30 of them need to take another math class. 
b. At most 29 of them need to take another math class. 
c. At least 31 of them need to take another math class. 
d. Between 24 and 32 (including 24 and 32) of them need to take another math class. 

 

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70% of all students at a college still need to take another math class. If 43 students are randomly selected, find the probability that

a. Exactly 30 of them need to take another math class. 
b. At most 29 of them need to take another math class. 
c. At least 31 of them need to take another math class. 
d. Between 24 and 32 (including 24 and 32) of them need to take another math class.

 

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