Answer:
46/3 or 15.3
Step-by-step explanation:
After rounding to the nearest integer, we have:
3(x - 7) = 25.
Dividing both sides by 3, to isolate (x - 7), we get x - 7 = 25/3.
Adding 7 to both sides, we get x = 25/3 + 7, or x = 25/3 + 21/3, or x = 46/3. This is 15 1/3, which is closest to the last given possible answer (15.3).
the answer should be 256 according to my calculations
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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>