Statistics Solutions

[All Steps] A group of 40 homeowners showed that their average monthly gasoline bill was $192. According to a national consumer group, their mean bill should



Question: A group of 40 homeowners showed that their average monthly gasoline bill was $192. According to a national consumer group, their mean bill should be μ = $188. Assuming \(\sigma \) = $8, test this hypothesis at the α = 0.05 level of significance.

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