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z Medical Questions

Your Question
A manufacturer of cookies would like to know whether its bag filling machine works correctly at the 433 gram setting. Based on a 37 bag sample where the mean is 434 grams and the standard deviation is 21, is there sufficient evidence at the 0.02 level that the bags are overfilled? Assume the population is normally distributed.
What are the Hypotheses Ho and Ha?
What is the test statistic?
What is the P value of the test statistic?
Do we reject null hypothesis?
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