Mathematics, 21.08.2019 02:00 joe7977

Aprogrammer plans to develop a new software system. in planning for the operating system he will use, he needs to estimate the percentage of computers that use a new operating systems. how many computers must be surveyed in order to be 90% confident that his estimate is in error by no more than four percentage points?
a) assume that nothing is known about the percentage of computers with new operating systems. n = ?
b) assume that a recent survey suggests that 99% of computers use a new operating system. n = ?

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Aprogrammer plans to develop a new software system. in planning for the operating system he will use...