Clem knows he scored more than two standard deviations above the mean on the last exam. Given only this information, what can we correctly conclude?

a. He scored higher than 75% of the class.
b. He scored higher than at least 87% of the class.
c. He scored higher than more than 95% of the class.
d. He scored higher than at least 99% of the class.
e. He does not have enough information to conclude any of the above.


Ans: b

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