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The data from car crash tests for four different vehicle size categories (Small, Midsize, Large, and SUV) with measured amounts of left leg ferur force (kN) results in the


following Minitab display. Using a 0. 05 significance level, test the claim that the four vehicle size categories have the same mean force on the femur of the left leg. Does size


of the car appear to have an effect on the force on the left femur in crash tests?


Analysis of Variance


Source DF Adj SS Adj MS F-Value P-value


3 0. 6165 0,2055 0. 52 0. 670


Determine the test statistic.


The test statistic is


(Round to two decimal places as needed. )


Determine the P-value


Size

Sagot :

Do not reject H0 there is not sufficient evidence at a 0.05 significance level to warrant rejection of the claim that the four vehicle size categories have the same mean force on the left femur in crash tests.

What is Null hypothesis?

A statistical hypothesis known as a null hypothesis asserts that no statistical significance can be found in a collection of provided observations. Using sample data, hypothesis testing is performed to judge a theory' veracity. It is sometimes referred to as just "the null," and its symbol is H0.

from given outpout

Null hypothesis

H0:u1=u2=u3=u4

Alternative Hypothesis

H1: not all means are equal

Test statistic =F=0.49

P value=0.691

Pvalue>0.05 alpha level of significance

We fail to reject null hypothesis

Conclusion =

Do not reject H0 there is not sufficient evidence at a 0.05 significance level to warrant rejection of the claim that the four vehicle size categories have the same mean force on the left femur in crash tests.

To learn more about statistical hypothesis visit:https://brainly.com/question/29576929

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