The mileage on six vehicles leased for one year was recorded as follows. $25,720 \mathrm { mi } , 25,780 \mathrm { mi } , 25,760 \mathrm { mi } , 25,750 \mathrm { mi } , 25,700 \mathrm { mi } , 25,710 \mathrm { mi } .$ What is the sample standard deviation?
A) $s = 28 \mathrm { mi }$
B) $S = 31 \mathrm { mi }$
C) $s = 25 \mathrm { mi }$
D) $S = 32 \mathrm { mi }$
E) $s = 29 \mathrm { mi }$

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The Answer of The mileage on six vehicles leased for one year was recorded as follows. $25,720 \mathrm { mi } , 25,780 \mathrm { mi } , 25,760 \mathrm { mi } , 25,750 \mathrm { mi } , 25,700 \mathrm { mi } , 25,710 \mathrm { mi } .$ What is the sample standard deviation?
A) $s = 28 \mathrm { mi }$
B) $S = 31 \mathrm { mi }$
C) $s = 25 \mathrm { mi }$
D) $S = 32 \mathrm { mi }$
E) $s = 29 \mathrm { mi }$