Question

The values in the table below are measured maximum breadths​ (in millimeters) of male skulls from different epochs. Changes in head shape over time suggest that interbreeding occurred with immigrant populations. Use a 0.05 significance level to test the claim that the different epochs all have the same mean. LOADING... Click the icon to view the table. Find the​ P-value. The​ P-value is nothing . ​(Round to three decimal places as​ needed.) Test the claim that the different epochs all have the same mean. A. There is sufficient evidence to reject the claim that the different epochs have the same mean. B. There is not sufficient evidence to reject the claim that the different epochs have the same mean.

4000 B.C   1850 B.C.   150 A.D.
131   129   128
138   135   138
125   136   136
129   137   139
132   137   141
135   127   142
132   136   137
134   136   145
138   134   137

Answer 1

Answer

Using TI 84 calculator

press stat then edit and enter the data sets in L1, L2 and L3

press stat then tests then select ANOVA

select L1, L2 and L3 data set

press enter

we get

p value = 0.031

it is clear that the p valueis less than significance level of 0.05, so we can reject the null hypothesis and conclude that there is a significant difference between groups

option A

There is sufficient evidence to reject the claim that the different epochs have the same mean.