number 14

A programmer plans to develop a new software system. In planning for the operating system that he willuse, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 99% confident that his estimate is in error by no more than three percentage points? Complete parts(a) through(c) below.

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

n= -------

(Round up to the nearestinteger.)

b) Assume that a recent survey suggests that about 93% of computers use a new operating system.

n= ------- (Round up to the nearestinteger.)