Question: The area under a particular normal curve between 8 and 11 is 0.7794. A normally distributed variable has the same mean and standard deviation

The area under a particular normal curve between 8 and 11 is

The area under a particular normal curve between 8 and 11 is 0.7794. A normally distributed variable has the same mean and standard deviation as the parameters for this normal curve. What percentage of all possible observations of the variable lie between 8 and 11?

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