A Frequency Distribution Has a Mean of 100 and a Standard

question 46

Multiple Choice

A frequency distribution has a mean of 100 and a standard deviation of 20. The class limits for one class are 50 up to 60. Based on the normal distribution,what is the probability that an observation would be in this class?

• A)0.4938
• B)0.4772
• C)0.0166
• D)−0.0166

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