Question: Daily profits at a retail store have an average of $1000. If at least 88.9% of values are between $800 and $1200, what is the

Daily profits at a retail store have an average of $1000. If at least 88.9% of values are between $800 and $1200, what is the standard deviation of daily profits? (Please enter you answer with a single decimal digit using a dot, e.g. 43.7)

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