If a Class's Scores Are Normally Distributed,with a Mean of 70

question 16

Multiple Choice

If a class's scores are normally distributed,with a mean of 70 and a standard deviation of 10,what are the upper and lower limits of the middle 68% of the class?

• A)50 and 90
• B)40 and 100
• C)60 and 80
• D)32 and 68

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Definitions:

Exponentiation

A mathematical operation involving raising a base number to the power of an exponent, signifying repeated multiplication of the base.

Division

A mathematical operation where one number, the dividend, is divided by another number, the divisor, to produce a quotient.

Exponentiation

A mathematical operation involving the raising of a number to the power of another number.

Division

A mathematical operation where one quantity is divided by another, yielding a quotient or result.