A lechnician select and randomly 4 of these printers in order to be checked. Then, a) write the formula for p(r), the probability distribution of the variable z, which indicates the number of laser printers; b) find the probability that exactly 4 are laser printers; c) find the probability that 3 out of 4 are laser printers;
A lechnician select and randomly 4 of these printers in order to be checked. Then, a) write the formula for p(r), the probability distribution of the variable z, which indicates the number of laser printers; b) find the probability that exactly 4 are laser printers; c) find the probability that 3 out of 4 are laser printers;
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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Transcribed Image Text:Problem 5
A university warehouse has received a shipment of 13 printers, of which 5 are laser printers and 8
are inkjet models. A technician select and randomly 4 of these printers in order to be checked. Then,
a) write the formula for p(x), the probability distribution of the variable r, which indicates the
number of laser printers;
b) find the probability that exactly 4 are laser printers;
c) find the probability that 3 out of 4 are laser printers;
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