# The mean of a normal probability distribution is 380: the stardard deviation is 16.a. About 68 % of the observations lie between what two values?HeipSave &Value 1Value 2b. About 95% of the observations lie between what two values?Value 1Value 2c. Practically all of the observations lie between what two values?Value 1Value 2Next3 of 10

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11 views help_outlineImage TranscriptioncloseThe mean of a normal probability distribution is 380: the stardard deviation is 16. a. About 68 % of the observations lie between what two values? Heip Save & Value 1 Value 2 b. About 95% of the observations lie between what two values? Value 1 Value 2 c. Practically all of the observations lie between what two values? Value 1 Value 2 Next 3 of 10
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Step 1

a)

About 68% of the observations between the value 1 is 364 and the value 2 is 396.

The mean of the normal distribution is 380 and the standard deviation is 16.

Empirical Rule:

• The percentage of values lies between one standard deviation from the mean is 68%.
• The percentage of values lies between two standard deviation from the mean is 95%.
• The percentage of values lies between one standard deviation from the mean is 99.7%
Step 2

b)

About 95% of the observations between the value 1 is 348 and th...

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