SOLUTION: 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 opera
Algebra ->
Probability-and-statistics
-> SOLUTION: 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 opera
Log On
Question 1155904: 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% confident that his estimate is in error by no more than one percentage pointquestion mark Complete parts (a) through (c) below.
a) Assume that nothing is known about the percentage of computers with new operating systems.
nequals
nothing
(Round up to the nearest integer.) Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! assume the probability of a dichotomous system is 0.5 for each to be most conservative.
the margin of error is z(0.95)*sqrt(p*(1-p)/n)
=1.645*sqrt (0.25)/n
square both sides, multiply through by n
2.706*0.25=.0001n
n=6765.06 or 6766
