Question: Use the grouped data formulas to find the indicated mean or standard deviation. The costs per load (in cents) of 26 detergents tested by

Use the grouped data formulas to find the indicated mean or standard

Use the grouped data formulas to find the indicated mean or standard deviation. The costs per load (in cents) of 26 detergents tested by a consumer organization are shown here. Find the standard deviation of the sample. Phone calls (per day) Frequency 20-28 29-37 38-46 47-55 063 07.1 099 085 6 0 10 3 N 5 13 2

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