Which of these methods can be used in a survey? Select all that apply. An online poll is distributed, and 40 people respond. O A phone interview is issued to 100 local voters. O A sales representative hands out paper questionnaires to every new client. An editor reviews articles submitted by candidates and selects the best one. O A psychologist observes the performance of students enrolled in college over a period of 2 years.

7 men and 5 women have signed up for a research study. Researchers must choose 3 people for the control group. How many possible control groups contain at least one woman?

Please help explaining how to answer so I can study for my test. The Farm Program for the Montana State Department of Agriculture needs to choose a sample of farms in order to collect information about land utilization. Montana has 56 counties and the 26,800 farms across the state are currently categorized by county. The program would like to select a random sample of at least 112 farms and record the total acreage and the acreage used for pasture and range for each farm in the sample. Two plans have been proposed: Plan A: The program will randomly select 10 counties from the 56 counties. All farms within the 10 selected counties will be visited by a surveyor who will calculate the total acreage and acreage used for pasture and range. Plan B: The program will randomly select 2 farms from each county. All 112 selected farms will be visited by a surveyor who will calculate the total acreage and acreage used for pasture and range. Which of the following best describes the…

There are​ 64% of US adults who own a​ smartphone, up from​ 35% in 2011. Smartphones have become an important way for Americans to​ communicate, go​ online, access and share information. The Pew Research Center surveyed 1635 people in​ November, 2014 on smartphone ownership. Their goal was to learn how Americans use their smartphone devices.   Identify the population and the sample.