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A web server hosting company advertises 99.999 percentguaranteed network uptime. (Data are from www.rackspace.com .) (a) How many independent network servers would be needed if

A web server hosting company advertises 99.999 percentguaranteed network uptime. (Data are from www.rackspace.com.) (a) How many independent network servers would be needed if each has 99 percentreliability? (Round your answer to the nearest whole number.)

(b) How many independent network servers would be needed if each has 90 percentreliability? (Round your answer to the nearest whole number.)

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