Below is a data table from a survey of 12 random car owners that were asked...

Below is a data table from a survey of 12 random car owners that were asked about their typical monthly expenses in dollars on gasoline.

210 160 43 255 176 135 221 359 380 405 391 477

(a) Is there evidence at the 5% significance level to suggest the mean monthly gasoline expense for all car owners is less than $200?
(b) Interpret the P-value in the context of this test.
(c) Explain what a Type I error would mean in the context of this test.
(d) Explain what a Type II error would mean in the context of this test.

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Expert Solution

orchestra answered 1 year ago

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