FORESTRY
AGRICULTURAL STATISTICS AND ECONOMICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A radar unit is used to measure speeds of cars on a motorway. The speeds are normally distributed with a mean of 90 km/hr and a standard deviation of 10 km/hr. What is the probability that a car picked at random is travelling at more than 100 km/hr?
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0.4391
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1.368
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0.675
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0.1587
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Explanation:
Detailed explanation-1: -x has =90, =10. Given x, z=x−. Hence the probability that a car selected at a random has a speed greater than 100 km/hr is equal to 0.1587.
Detailed explanation-2: -A radar speed gun (also radar gun and speed trap gun) is a device used to measure the speed of moving objects.
There is 1 question to complete.