Sheraton Resorts has 3,100,000 members in its Gold Club and conducts research and surveys to gather information about them. 10% of Gold Club members prefer to use Sheraton hotels when they travel. Why would you not answer this question and what percentage of Gold Club members use Sheraton hotels? Apologies from Sheraton if 90% of Gold Club members use other hotels and resorts. Sheraton acknowledges the loyalty of the remaining 90% of Gold Club members. Please do not answer and conduct a survey.

a) In the Sheraton example, the percentage of members who do not answer the survey is ________. Explain in one sentence.

b) In the Sheraton example, the sample size is determined by ________. Explain in one sentence.

c) Sheraton plans to send 10,000 members of Hilton Honors Club a questionnaire. This group of people is called ________. Explain in one sentence.

d) Explain the calculation of the percentage of 10,000 club members in one sentence.