Question

# In the population below. What is the prevalence of hypertension among those who are not obese?...

In the population below. What is the prevalence of hypertension among those who are not obese? Hypertension No Hypertension Total Obese 8254 1120 9374 Not Obese 3152 6374 9526 Total 11406 7494 18900

H0: There is no association between prevalence of hypertension among those who are not obese

H1: There is association between prevalence of hypertension among those who are not obese

Let the los be alpha = 5%

The expected frequencies are

 Obsese A C M Total Hypertension 5657.135 3716.865 9374 18748 No Hypertension 5748.865 3777.135 9526 19052 Total 11406 7494 18900 37800

The chisquare contribution values are

 Oi Ei (Oi-Ei)^2 /Ei 8254 5657.135 1192.0712 1120 3716.865 1814.3537 9374 9374 0 3152 5748.865 1173.0503 6374 3777.135 1785.4029 9526 9526 0 Total: 5964.8781

Degrees of freedom: 2

Test Statistic, X^2: 5964.8800
Critical X^2: 5.991471
P-Value: 0.0000

Here p-value < alpha 0.05 so we reject H0

Thus we conclude that There is association between prevalence of hypertension among those who are not obese

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