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?
head injury data for the dummies in the driver's seat.
Subcompact: 681 428 917 898 520
Compact: 643 655 442 514 525
Midsize: 469 627 525 454 259
Full-size: 384 656 502 687 360
Find the P-value.
The P-value is ___?(Round to three decimal places as needed.)
Do the sample data suggest that larger cars are safer?
There is not sufficient evidence to reject the alternative hypothesis. It can be concluded that larger cars are safer.
There is sufficient evidence to reject the null hypothesis. It can not beconclude that larger cars are safer.
There is not sufficient evidence to reject the null hypothesis. It cannot be concluded that larger cars are safer.
Recently Asked Questions
- In a normally distributed data set with a mean of 24 and a standard deviation of 4.2, what percentage of the data would be between 15.6 and 32.4 and why?
- Let x be a random variable representing dividend yield of bank stocks. We may assume that x has a normal distribution with =2.6% .A random sample of 10
- Prose rhythm is characterized as the occurrence of five-syllable sequences in long passages of text. This characterization may be used to assess the similarity