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The average speed for his journey from York to Blackpool is 61.4 KM/H
A.)))))))))))
- Harvard university professor
In a normal distribution, the z value for an x value that is to the right of the mean will always be positive while on the other hand if the z value for an x value that is to the left of the mean it will always be negative. It is because left side is always negative and right side is always positive.
