Page 166 - Bangladesh_classwiz_BOOK2018_rev_Neat
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(M) ˆ`wbK LiP 64 UvKv ev Zvi Kg
( ≤ 64) = ( ≤ −1.33) = 0.091759
Giƒc Qv‡Îi msL¨v = 0.091759 × 300 = 27.52 ≈ 28 Rb
(N) ‰`wbK LiP eo‡Rvo 80 UvKv
= ( ≤ 80)
= ( ≤ 4) = 0.99997
Giƒc Qv‡Îi msL¨v = . 99997 × 300 = 299.991 ≈ 300 Rb
(O) ˆ`wbK LiP 60 †_‡K 65 UvKv g‡a¨
= (60 ≤ ≤ 65)
= (−2.67 < < −1)
= 0.1548674
Giƒc Qv‡Îi msL¨v = 0.15486 × 300 = 46.46 ≈ 47 Rb
(P) ˆ`wbK LiP 65 UvKvi †ewk I 71 UvKvi Kg
= (65 < < 71)
= (−1 < < 1)
= 0.6826
Giƒc Qv‡Îi msL¨v = 0.6826 × 300 = 204.804 ≈ 205 Rb|
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