Before a new phone system was installed, the amount a company spent on personal calls followed a normal distribution with an average of $ 600 per month and a standard deviation of $50 per month. Refer - QAmmunity.org

Before a new phone system was installed, the amount a company spent on personal calls followed a normal distribution with an average of $ 600 per month and a standard deviation of $50 per month. Refer

asked Jan 27, 2021 230k views

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