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We need to define the variables,
So,

Therefore, the probability that the repair time is more than 4 horus can be calculate as,

The probability that the repair time is more than 4 hours is 0.136
b) The probability that repair time is at least 12 hours given that the repair time is more than 7 hoirs is calculated as,


The probability that repair time is at least 12 hours given that the repair time is more than 7 hours is 0.63
Answer:
The probable grain-coarsening mechanism is : Ideal grain growth mechanism
(
-
= kt )
Explanation:
The plot attached below shows the time dependence of the growth of grain.
The probable grain-coarsening mechanism is : Ideal grain growth mechanism
the ideal growth follows this principle =
= kt
d = final grain size
= initial grain size
k = constant ( temperature dependent )
t = 0
Answer: I will list them down below!
Explanation:
He can buy 6, 50 cent candies.
He can buy 30, 20 cent candies.
He can buy 6, 30 cent candies and 6, 20 cent candies.
He can buy 15, 20 cent candies and 3, 50 cent candies.
He can by 3, 20 and 30 cent candies and 3, 50 cent candies.
That's it.
Hope this helps!