A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 436.0 gram setting. It is believed that the machine is underfilling the bags. A 46 bag sample had a mean of 430.0 grams. A level of significance of 0.01 will be used. Determine the decision rule. Assume the standard deviation is known to be 23.0.
Enter the decision rule.
Reject Ho if z < _____
Please don't hesitate to give a "thumbs up" in case you are satisfied with the answer.
Sample mean = 430
Pop. Mean = 436
n = 46
Stdev = 23
Now, Hypothesis is :
Ho: Mu >= 436
Ha: Mu < 436
So, we reject Ho if the Z < Z value for .01 or -2.33
So, we reject Ho if Z < -2.33
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