A robot in a food factory places salt on each snack cracker. The amount of salt

Question

A robot in a food factory places salt on each snack cracker. The amount of salt is measured in milligrams.  The average amount of salt per cracker is 10 milligrams, and the standard deviation around this average is 0.2 milligrams. If the amount of salt per cracker is normally distributed with an average of 10 then we would expect ____ of all crackers to be within three standard deviations of the average (i.e. we'd expect them to have between 9.4 and 10.6 milligrams of salt). Hint: see the slide entitled "Probability."  

95.55%

99.74%

3

0.26%

Explanation / Answer

Answer: SInce the amount of salt cracker is normally distributed hence with 3 std dev of the average we can have 99.74% of crackers within the limit

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