An electronic product with n identical parts connected in series cannot function properly if any of the parts fail. When the life span of each part follows expOib) and is independent to each other, answer the following questions. (1) The random variable Y is the lifetime of this electronic product. Find the distribution of Y. (eg. normal distribution, binomial distribution, etc.) (2) Find the distribution of Z = \"232w (e.g. normal distribution, binomial distribution, etc.) (3) Use number (2) to find the (1 - or) X 100% confidence interval of A when n = 10