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Indy 500 Qualifier Speeds The speeds in miles per hour of six randomly selected qualifiers for...

Indy

500

Qualifier Speeds The speeds in miles per hour of six randomly selected qualifiers for the Indianapolis

500 (in 2012) are listed below. Estimate the mean qualifying speed with

90% confidence. Round your answers to at least four decimal places.

223.422, 223.684, 224.037, 225.172, 226.240, 226.484

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