Select True or False from each pull-down menu, depending on whether the corresponding statement is true or false.

? True False  1. The response rate of a survey is the proportion of all people who were selected but did not complete the survey.

? True False  2. A telephone interview is usually an inexpensive method of collecting data, but it is also less personal and has a lower expected response rate.

? True False  3. A 95% confidence interval for average wage rates in a random sample of 40 workers is developed. This illustrates the characteristic of sampling error.

? True False  4. A person receives a mail questionnaire and places it in the wastebasket. This illustrates the characteristic of nonresponse error.