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A spectrum has a signal - tomoise ratio of 8 1 . How many spectra at least must be averaged to increase the signal -

A spectrum has a signal

-

tomoise ratio of

\frac{8}{1} .

How many spectra at least must be averaged

to increase the signal

-

tomoise ratio to

\frac{24}{1} ?

Your answer A

. 5,

. 7,

. 9, D . 11

;

E . 13

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