Applied Mathematics for Electrical Engineering (3130908)

Q5 (c ( ii )) Winter-2019  

Two automatic filling machines A and B are used to fill mixture of cement, concrete and beam. A random sample of beam on each machine showed following results.

$\mathrm{A}$	$\mathrm{32}$	$\mathrm{28}$	$\mathrm{47}$	$\mathrm{63}$	$\mathrm{71}$	$\mathrm{39}$	$\mathrm{10}$	$\mathrm{60}$	$\mathrm{96}$	$\mathrm{14}$
$\mathrm{B}$	$\mathrm{19}$	$\mathrm{31}$	$\mathrm{48}$	$\mathrm{53}$	$\mathrm{67}$	$\mathrm{90}$	$\mathrm{10}$	$\mathrm{62}$	$\mathrm{40}$	$\mathrm{80}$

Find standard deviation of each machine and also comment on the performance of the two machine.