Statistics
posted by susan .
In recording the selfreported lengths of a particular body part in a sample of male undergraduates, the largest was claimed to be 20 cm—a full 3 standard deviations from the mean length for the sample. The shortest alleged length was only 10 cm, which was equivalent to standard score of 2. What were the mean and standard deviation of the alleged index finger lengths?

Mean = 14
Standard deviation = 2
Two standard deviations below the mean would be 10. Three standard deviations above the mean would be 20.