Solution :
Given that,
mean = = 177 lb
standard deviation = = 32 lb
n = 8
= = 177 lb
= / n = 32/ 8 = 11.31
P( > 173) = 1 - P( < 173)
= 1 - P[( - ) / < (173 - 177) / 11.31 ]
= 1 - P(z < -0.35)
Using z table,
= 1 - 0.3632
= 0.6368
No, there is a good chance that 8 randomly selected people will exceed the elevator capacity.
6.4.9 An elevator has a placard starting that the maximum capacity is 1384 lb- passengers. So,...
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