Question: Dear tutor, the answer should be clear. Thank you!!! Question 4. Let1,2, and3be independent lifetimes of memory chips. Suppose that eachhas the normal distribution with

Dear tutor, the answer should be clear. Thank you!!!

Question 4.

Let1,2, and3be independent lifetimes of memory chips. Suppose that eachhas the normal distribution with mean 300 hours and standard deviation 10 hours. Compute the probability that at least one of the three chips lasts at least 290 hours.

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