Mathematics, 12.12.2019 04:31 jorell
The nar estimates that 23% of all homes purchased in 2004 were considered investment properties. if a sample of 800 homes sold in 2004 is obtained find the probability that at least 175 homes are going to be used as investments.
Answers: 1
![P(p\geq 0.21875)=P(\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\geq\dfrac{0.21875-0.23}{\sqrt{\dfrac{0.23(1-0.23)}{800}}})\\\\=P(z\geq-0.756)\ \ [\because\ z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}]\\\\=P(z-z)=P(Z](/tpl/images/0414/7793/15b40.png)
[using p-value calculator or z-table]
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The nar estimates that 23% of all homes purchased in 2004 were considered investment properties. if...
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