Question

question 18: for the study described below, identify the sample statistic. a bank manager wants to know the average amount of time customers of his bank have to wait in line. 300 customers were polled and asked about their average wait time at the bank. the 300 people polled the percentage of dissatisfied customers among all of the banks customers the average wait time for the 300 customers polled the average wait time for all of the banks customers question 19: identify which type of sampling is used in the example below. a sample consists of every 20th student who leaves the library. systematic stratified convenience simple random

Explanation:

Question 18

Step1: Identify sample statistic

A sample statistic is a characteristic of a sample. Here, the bank manager polls 300 customers and the average wait - time for these 300 customers is a sample statistic.
The average wait time for the 300 customers polled is the sample statistic.

Question 19

Step1: Recall sampling method definitions

Systematic sampling involves selecting elements from an ordered population at regular intervals. Since the sample consists of every 20th student who leaves the library, it is systematic sampling.

Answer:

Question 18: The average wait time for the 300 customers polled
Question 19: Systematic