A security company has established, from its statistics, that every time one of its alarms sounds, the probability that the event is really an emergency is 35%. According to this, if it is considered that 9 alarms have been activated, we can state that: I. The probability that 3 of them are real emergencies is 26.5%. II. The probability that none of them are real emergencies is 5.2%. III. The probability that 5 of them are real emergencies is 11.8%. Select one: a. Only I. b. Only II. c. Only III. d. I and III. e. II and III.

A security company has established, from its statistics, that every time one of its alarms sounds, the probability that the event is really an emergency is 35%. According to this, if it is considered that 9 alarms have been activated, we can state that: I. The probability that 3 of them are real emergencies is 26.5%. II. The probability that none of them are real emergencies is 5.2%. III. The probability that 5 of them are real emergencies is 11.8%. Select one: a. Only I. b. Only II. c. Only III. d. I and III. e. II and III.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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