A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 402 gram setting. Is there sufficient evidence at the 0.02 level that the bags are overfilled? Assume the population is normally distributed. State the null and alternative hypotheses for the above scenario.
solution:
This is the two tailed test .
The null and alternative hypothesis is ,
bag filling machine works correctly at the 402 gram setting
H0 : = 402
bag filling machine works incorrectly at the 402 gram setting
Ha : 402
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