Question 655116
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Hi,
RE TY, Yes, NORMSDIST(-2.8) is .00256  and NORMSDIST(1.4) is .91924
 .91924
-.00256  is  .91668  Or = .9167   Or 91.67%
(Ans Correct, as listed, rounded to 4 decimal points, calculation  Using 5)
As to: .9192 - .0026 (Using 4 decimal points for calculation...)= 91.66% 

t = (190-200)/(25/&#8730;49)= -10/3.57= -2.80 Yes
t =  (205-200)/(25//&#8730;49)= 5/3.57= 1.4   Yes
P(180< <span style="text-decoration: overline">x</span>    <205) = P( -2.80  &#8804; t  &#8804; 1.4) = .91924 - .00256 = .9167