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Asked Oct 20, 2019
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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?
Heip
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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
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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? 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 <Prev re to search 2d

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Expert Answer

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%
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-. 380-16,380+16] -[364, 396]

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Step 2

b)

 

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

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20,+20380- (2x16), 380 + (2x16)] = [380-32,380+32] 348, 412]

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