Question: Hello, I don't understand how could we get an answer for this question? thank you. A class has a mean of 74 and a standard

Hello,

I don't understand how could we get an answer for this question? thank you.

Hello, I don't understand how could we get an answer for this

A class has a mean of 74 and a standard deviation of 8, what interval would contain 68% of the data? 0 none of the choices 0 58-90

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