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12/30 is simplified to 2/5 and<span>number of students trying out the same for both boys and girls</span> 16/40 is also simplified to 2/5 so YES the number of students trying out is the same for both boys and girls. I hope this helps :)
Answer:

Step-by-step explanation:
Given
--- proportion
--- defective motors
--- sample size
Required
Determine the probability that exactly 2 is defective
This follows a Poisson distribution and will be solved using:

Where
u = Expected number of occurrence, and it is calculated as:




So:
becomes






<em>Hence, the probability that exactly 2 out of 60 will be defective is 0.2613</em>
Answer: $144.50
Step-by-step explanation:
is/of = %/100
x/85 = 170/100
14,450 = 100x
divide by 100
x = $144.50
Answer:
18/56
Step-by-step explanation: