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How do I solve this using R (the language)  . 1. The lifetime of a...

How do I solve this using R (the language)

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1. The lifetime of a certain type of light bulb has a Normal distribution with / = 2000 hours and o = 200 hours. Let X represent the number of hours a randomly chosen light bulb lasts. a. Find P(X < 1900 hours). b. Find P(1812 < X < 2258). c. If bulbs are independent, what is the probability that two bulbs both last longer than 1980 hours? d. What is the first quartile of light bulb lifetimes? e. The best (longest-lasting) 7% of bulbs last at least how many hours? f. Let Y represent the total combined lifetime of 6 independent light bulbs. Find P(Y < 12,700).

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