It has to be an equation that adds up to an exponent of 3
Answer:
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Step-by-step explanation:
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Any number, except 0, divided by itself is always 1
x/x = 1 where x cannot be zero, but it can be any other number you want.
Answer:
The probability of a bulb lasting for at most 606 hours is 0.9032
Step-by-step explanation:
The mean lifetime of a bulb is 580 hours.
The standard deviation of the lifetime is 20 hours
We are supposed to find the probability of a bulb lasting for at most 606 hours i.e.
Formula :
Z=1.3
Refer the z table
Hence the probability of a bulb lasting for at most 606 hours is 0.9032