Weights of Chocolate Bars Narrative

question 49

Essay

Weights of Chocolate Bars Narrative
A candy bar factory is pouring chocolate into moulds to cool. The finished bars are sold as 35 gram bars. The company will lose money if the moulds are overfilled. If the moulds are underfilled, the weight of the candy bars will be less than the wrapper label says, and the company will be subject to a fine for misrepresenting the size of its product. The company wants to create an chart to monitor the weight of the candy bars. Suppose 5 samples are taken, each of size 30, having the sample means 36.1, 34.6, 35.8, 34.9, and 35.8 grams, respectively.
-Refer to Weights of Chocolate Bars Narrative. The calculated value of s, the sample standard deviation of all nk = (30)(5) = 150 observations, is 3.36 grams. What is the standard error of the mean of 30 observations?

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