A manufacturer of chocolate chips would like to know whether it's bag filling machine works correctly at the  424.0 gram setting. It is believed that the machine is underfilling the bags. A 41 bag sample had a mean of 419.0 grams. A level of significance of 0.01 will be used. Determine the decision rule.  Assume the variance is known to be 289.00.  Enter the decision rule.  Ho if z < __________

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