Do these data allow us to conclude at the 5% significance level that adults with no siblings suffer different rates of hypertension than those with siblings?
Psychologists have been investigating the differences between people with at least one brother or sister and those with none. In a letter to the New England Journal of Medicine, researchers announced the results of a survey of 472 adults in Buffalo, New York. The experiment recorded whether the respondent suffered from hypertension and whether she or he had siblings. The data were summarized as shown bellow;
|
|
SIBLING |
NO SIBLING |
TOTAL |
|
Suffer from hypertension |
79 |
39 |
118 |
|
Do not suffer from hypertension |
262 |
92 |
354 |
|
TOTAL |
341 |
131 |
472 |
REQUIRED
Do these data allow us to conclude at the 5% significance level that adults with no siblings suffer different rates of hypertension than those with siblings?
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