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.

1. Yes

2. No

3. Yes

4. No

Step-by-step explanation:

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.

answer: 140

step-by-step explanation:

so just add all then it will be your answer but i am not pretty sur eif it is but hope this i am here to people

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.