Ten percent of engines on an assembly line are defective. Ifengines are randomly selected one...

Ten percent of engines on an assembly line are defective. If engines are randomly selected one at a time and tested, what is the probability that the first nondefective engine will be found on the second trial?

Expert Solution

the engines on are as an the assembly line are is defective ten percent is ....?

to find the probability of the first nondefective engine is as the will be found on of these are as the second trial is ....?

the probability is shown in the below step by step

here we are know as the values is already,

now we are know as the formula is

probability ( the 2nd trail an 1st non defective ) = probability ( the 1st trial of the defective ) * ( probability ( the 2nd trial of the non defective )

now substitute the values is in the above formula

( 0.1 ) * ( 0.9 ) here ( 1 - 0.10 = 0.90 )

0.09

therefore 0.09

so finally the probability is 0.09

0.09

orchestra answered 2 years ago

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