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Refer to the Data Xˉ\bar{X} And S
B) Find the Proportion of the Observations That Are

Question 11

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Refer to the data.
 Refer to the data.     a) Calculate  \bar{X}  and s. b) Find the proportion of the observations that are in the intervals  \bar{X}±s ,  \bar{X}±2s  , and  \bar{X}±3s  .
a) Calculate Xˉ\bar{X} and s.
b) Find the proportion of the observations that are in the intervals Xˉ±s\bar{X}±s , Xˉ±2s\bar{X}±2s , and Xˉ±3s\bar{X}±3s .

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a)
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b) 13/20 = 0.6...

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