In an Oreo factory, the mean mass of a cookie is given as 12 g. For quality control, the standard deviation is 1 g. The distribution of cookie masses is normally distributed. 9 10 11 12 13 14 15 What % of cookies are within 1 g of the mean? B

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Author:Amos Gilat
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**Understanding Normal Distribution in Quality Control**

In an Oreo factory, the mean mass of a cookie is given as 12 grams. For quality control, the standard deviation is 1 gram. The distribution of cookie masses is normally distributed.

**Graph Explanation:**

The image shows a normal distribution curve, which is symmetrical and bell-shaped. The x-axis is labeled with values ranging from 9 to 15. The peak of the curve is centered around the mean value of 12 grams. This represents the highest frequency of occurrence for the cookie masses.

The graph illustrates how data is spread around the mean: 
- 68% of data falls within one standard deviation (11 to 13 grams).
- 95% of data falls within two standard deviations (10 to 14 grams).
- 99.7% of data falls within three standard deviations (9 to 15 grams).

**Question:**

What percentage of cookies are within 1 gram of the mean?

[Input your answer in the provided box.]
Transcribed Image Text:**Understanding Normal Distribution in Quality Control** In an Oreo factory, the mean mass of a cookie is given as 12 grams. For quality control, the standard deviation is 1 gram. The distribution of cookie masses is normally distributed. **Graph Explanation:** The image shows a normal distribution curve, which is symmetrical and bell-shaped. The x-axis is labeled with values ranging from 9 to 15. The peak of the curve is centered around the mean value of 12 grams. This represents the highest frequency of occurrence for the cookie masses. The graph illustrates how data is spread around the mean: - 68% of data falls within one standard deviation (11 to 13 grams). - 95% of data falls within two standard deviations (10 to 14 grams). - 99.7% of data falls within three standard deviations (9 to 15 grams). **Question:** What percentage of cookies are within 1 gram of the mean? [Input your answer in the provided box.]
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The mean is 12 g and standard deviation is 1 g.

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