The owner of a catering company wants to select a random sample of clients to find out about their food preferences. Select Yes or No to tell whether each method results in a random sample of the population.

Yes or No, The owner uses a database to print the names of all clients on slips of paper. The owner chooses 20 of the slips of paper without looking.

Yes or No, The owner sends a survey to every client who spent more than $500 with the catering company in the past year.

Yes or No, The owner sends a survey to all clients whose phone number ends in 5.

Yes or No, The owner sends a survey to the last 20 clients who used the catering company's services.

When you say a random sample, this means that every member of the population will have a chance to be part of the sample. If you consider the scenarios, only the 1st and 3rd option will come up with a random sample because the respondents of the sample is not predetermined. If you take the other options into consideration, you can see that not everyone would have had a chance to be part of the sample.