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Suppose that scores on a particular test are normally distributed with a mean of 130 and a standard deviation of 17. What is the minimum score needed to be in the top 5% of the scores on the test? Carry your intermediate computations to at least four decimal places, and round your answer to one decimal place. 0 X 5 ?The batteries from a certain manufacturer have a mean lifetime of 840 hours, with a standard deviation of 70 hours. Assuming that the lifetimes are normally distributed, complete the following statements. (a) Approximately 99.7% of the batteries have lifetimes between D hours and D hours . (b) Approximately ? v of the batteries have lifetimes between 770 hours and 910 hours