## 20.10 Quick review questions

1. True or false: $$p$$ is called a parameter.
2. True or false: The value of $$p$$ will vary from sample to sample.
3. True or false: The standard error refers to the sampling variation in $$p$$.
4. Suppose $$n=50$$ and $$\hat{p} = 0.4$$. What is the standard error?