Question 352088: The following table shows the observed distribution of A, B, AB, and O blood types in three samples of African Americans living in different locations.
Test at the α = 0.05 level of significance, whether the distribution of blood type for African Americans is different across the three regions.
I(Florida) II(Iowa) III(Missouri)
A 122 1781 353
B 117 1351 269
AB 19 289 60
O 244 3301 713
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Test at the α = 0.05 level of significance, whether the distribution of blood type for African Americans is different across the three regions.
I(Florida) II(Iowa) III(Missouri)
A 122 1781 353
B 117 1351 269
AB 19 289 60
O 244 3301 713
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Ho: The means are equal
Ha: The means are not all equal
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I ran an ANOVA on the data and got the following:
test stat: F = 5.1632
p-value = 0.0321
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Conclusion: Since the p-value is less than 5%,
reject Ho at the 5% level of significance.
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Cheers,
Stan H.
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