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The Costs Per Load (In Cents) of 47 Dish-Washing Detergents  Class limits  Frequency 20−281229−371038−461447−5511\begin{array} { c c } \text { Class limits } & \text { Frequency } \\ 20 - 28 & 12 \\ 29 - 37 & 10 \\ 38 - 46 & 14 \\ 47 - 55 & 11 \end{array}

Question 17

Multiple Choice

The costs per load (in cents) of 47 dish-washing detergents tested by a consumer organization are shown here. Find the standard deviation of the sample.
 Class limits  Frequency 20−281229−371038−461447−5511\begin{array} { c c } \text { Class limits } & \text { Frequency } \\ 20 - 28 & 12 \\ 29 - 37 & 10 \\ 38 - 46 & 14 \\ 47 - 55 & 11 \end{array}


A) 10.0
B) 10.4
C) 10.1
D) 6.2

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