aani~3~nis3su rdilri aiij4nwilu~umnis4nwinin~~ga pan biuau...

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a4 0 aani~3~nis3Su 6- - I . d3:rin3ffluniunf~d rdilri $~~UITLL~:~IOI~UBJ~~~S~ ai"ij4nwilu~umnis4nwinin~~Ga 8 Pan uiKu Biuau 797 nu bo, o, 2. n~unioriiJi~unii?<unfJd rsillTj ~~~MI-~U~:BIITTURJ~.~SU oi~a~nw~u~vmni~~nwinin~~~a 8 ?wui;f~ ~nis4nwi 2545 &!6~~&wni3 ~ua~lJ~lfJ ( Simple Random Sampling ) ~s~~lHum~lw2un~u~aa~lJ~mfJnl3~.a'~~3 ni~riiu~om~uniarii~"ua~uiui~d ( Yamane. 1973 : 72 ) 6lu2u 320 RIA

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Page 1: aani~3~nis3Su rdilri aiij4nwilu~umnis4nwinin~~Ga Pan Biuau ...etheses.psru.ac.th/lib-irpsru/sites/default/files/site/default/thesis/ch5-009_0.pdfa4 aani~3~nis3Su 0 6- - I. d3:rin3ffluniunf~d

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a a n i ~ 3 ~ n i s 3 S u 6 - -

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ai"ij4nwilu~umnis4nwinin~~Ga 8 Pan u iKu Biuau 797 nu bo, o,

2. n ~ u n i o r i i J i ~ u n i i ? < u n f J d rsillTj ~ ~ ~ M I - ~ U ~ : B I I T T U R J ~ . ~ S U

o i ~ a ~ n w ~ u ~ v m n i ~ ~ n w i n i n ~ ~ ~ a 8 ?wui;f~ ~ n i s 4 n w i 2545 &!6~~&wni3

~ u a ~ l J ~ l f J ( Simple Random Sampling ) ~ s ~ ~ l H u m ~ l w 2 u n ~ u ~ a a ~ l J ~ m f J n l 3 ~ . a ' ~ ~ 3

n i~ r i i u~om~un ia r i i ~ "ua~u iu i~d ( Yamane. 1973 : 72 ) 6 l u 2 u 320 RIA

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