The Probability of a Radar Station Detecting an Enemy Plane

question 34

Multiple Choice

The probability of a radar station detecting an enemy plane is 0.55 and the probability of not detecting an enemy plane is 0.45. If 5 stations are in use, what is the standard deviation? Round your answer to nearest hundredth.

• A)1.66
• B)1.11
• C)1.24
• D)2.75
• E)none of these choices

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