Problem
Current Attempt in Progress What Proportion of Americans Say They Are Poor? A survey of 1000 US Adults conducted in October 2019 found that 182 of them described themselves as poor. In Exercise 3.128, we used a bootstrap distribution to find a $90 \%$ confidence interval for the proportion of all US adults who would describe themselves as poor. Here, we find this $90 \%$ confidence interval using the nommal distribution and a formula for the standard error, as follows: (b) Give the notation of the sample statistic
Solution
Step 1 ：The problem is asking for the notation of the sample statistic. In this context, the sample statistic is the proportion of Americans who describe themselves as poor.
Step 2 ：The common notation for sample proportion is denoted as \(\hat{p}\).
Step 3 ：Therefore, the notation of the sample statistic is \(\boxed{\hat{p}}\).
