Given
= 940 , = 170
Using central limit theorem,
P( < x) = P(Z < ( x - ) / ( / sqrt(n) ) )
a)
P( > 1030) = P(Z > (1030 - 940) / ( 170 / sqrt(14) ) )
= P(Z > 1.98)
= 0.0239
b)
P( < 853) = P(Z < (853 - 940) / ( 170 / sqrt(14) ) )
= P(Z < -1.91)
= 0.0281
c)
P( > 935) = P(Z > (935 - 940) / ( 170 / sqrt(14) ) )
= P(Z > -0.11)
=P(Z < 0.11)
= 0.5438
(1 point) A sample of n = 14 observations is drawn from a normal population with...
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