In: Statistics and Probability
A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 414 gram setting. Based on a 8 bag sample where the mean is 421 grams and the standard deviation is 18 , is there sufficient evidence at the 0.025 level that the bags are overfilled? Assume the population distribution is approximately normal. Step 4 of 5 : Determine the decision rule for rejecting the null hypothesis. Round your answer to three decimal places.