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2 answers:
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Answer:
The right answer is:
(a) 0.1456
(b) 18.125, 69.1202, 8.3139
Step-by-step explanation:
Given:
N = 24
n = 5
r = 7
The improperly drilled gearboxes "X".
then,
⇒
(a)
P (all gearboxes fit properly) =
=
=
(b)
According to the question,
Mean will be:
⇒
Variance will be:
⇒
Standard deviation will be:
⇒