You are testing 100circuit boards. each passes with 70% probability and the trials are independent. let x be the random variable

Question

Alexxandr [17]

3 years ago

8

You are testing 100circuit boards. each passes with 70% probability and the trials are independent. let x be the random variable

for the number of circuit boards that pass. what is the mean of x?

Mathematics

1 answer:

leonid [27] · Answer 1 · 2022-08-19T03:26:29+03:00

leonid [27]3 years ago

7 0

Using the binomial distribution, where the number of trials is n and the probability of success is p, the mean is equal to np.
Therefore the mean of x in the question is 100 * 0.7 = 70.
The answer is: 70 circuit boards.