Find the standard deviation in volumes of quart-size Hellmann's mayonnaise jars.

Question

The actual volumes of quart-size jars of Hellmann's mayonnaise are uniformly distributed from 31.43 to 32.5 fluid ounces. Find the standard deviation in volumes of quart-size Hellmann's mayonnaise jars (in fluid ounces). NOTE: There are 32 fluid ounces in a quart.

Answer 1

The actual volumes of quart-size jars of Hellmann's mayonnaise are uniformly distributed from a = 31.43 to b = 32.5 fluid ounces.

A uniform distribution has a mean of mu = (a + b)/2 = 31.97.

A uniform distribution has a standard deviation of sigma = (b-a)/sqrt(12) = 0.31.