Question: A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage

A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 90

90% confident that his estimate is in error by no more than two

two percentage points question mark

Complete parts (a) through (b) below.

a) Assume that nothing is known about the percentage of computers with new operating systems.

N = ???

b) Assume that a recent survey suggests that about 94

94% of computers use a new operating system.

N= ????

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