Question 1181462: Due to the sharp increase in the prices of urban properties over the last five years, only a small percentage of new city dwellers can afford to buy their own property. According to a recent survey, only 22% of these new city dwellers can afford to buy their own property. An estate agency who wanted to verify this, considered a random sample of 200 recent city dwellers, and found that only 38 of them bought their property in town. Test at the 5% significance level whether the percentage has changed.
State the alternative hypothesis
Answer by CPhill(1987)   (Show Source):
You can put this solution on YOUR website! The alternative hypothesis is that the percentage of new city dwellers who can afford to buy property has *changed*. This means it's *different* from 22%, not just less than or greater than. So, it's a two-tailed test.
Formally:
* **H₁ (or Ha):** p ≠ 0.22 (The proportion is *not* 22%)
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