Statistics Solutions

(See) The weights of potato chips in a regular sized bag is said to be 10 ounces. The amount that the packaging machine puts in these bags is believed to

Question: The weights of potato chips in a regular sized bag is said to be 10 ounces. The amount that the packaging machine puts in these bags is believed to be normally distributed with a mean of 10.2 ounces and a standard deviation of 0.12 ounce.

  1. What is the probability that a bag is underweight (less than 10 ounces)?
  2. What is the probability that a sample of 23 bags has a mean less than 10 ounces?
  3. What is the cutoff weight between the top 10% of weights and the lowest 90% of weights?

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