All cars can be classified into one of four? groups: the? subcompact, the? compact, the?midsize, and...

All cars can be classified into one of four? groups: the? subcompact, the? compact, the?midsize, and the? full-size. There are five cars in each group. Head injury data? (in hic) for the dummies in the? driver's seat are listed below. Use a 0.05 significance level. Find the? P-value to test the null hypothesis that the different weight categories have the same mean. Do the sample data suggest that larger cars are? safer?

Subcompact   Compact   Midsize   Full-size
681   643   469   384
528   755   727   656
917   442   525   602
898   614   454   687
420   525   259   360

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orchestra answered 1 year ago

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