The Probability of a Radar Station Detecting an Enemy Plane

question 8

Multiple Choice

The probability of a radar station detecting an enemy plane is 0.85. If 7 stations are in use, what is the standard deviation? Round your answer to nearest hundredth.

• A)2.44
• B)0.94
• C)0.89
• D)5.95
• E)none of these choices

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