Nonresponse error represents a failure to obtain information from some elements of the population that were selected and designated for the sample.
a. True
b. False
Indicate whether the statement is true or false
Question 2
Following good email marketing principles, a company gathered ________ (Q10) to send future emails about its products and asked customers to ________ (Q11) to receive promotional mailings via email.
a. transactions
b. email addresses
c. permission
d. signatures