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OpenStudy (katecc379):
A shipment of racquetballs with a mean diameter of 60 mm and a standard deviation of 0.9 mm is normally distributed. By how many standard deviations does a racquetball with a diameter of 58.2 mm differ from the mean?
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OpenStudy (katecc379):
@JoannaBlackwelder
OpenStudy (joannablackwelder):
We get to one std dev from the mean by adding and subtracting the std dev from the mean. Can you find those values first?
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