In a medical research study, a researcher selects a hospital and interviews all the patients that day and identifies the sampling method that was used.

Indentify the sampling method that was used.
For $15$ minutes, all customers entering a selected WalMart store on a specific day are asked how many miles from the store they live.

Indentify the sampling method that was used.
To determine how long people exercise, a researcher interviews $5$ people selected from a yoga class, $5$ people selected from a weight-lifting class, $5$ people selected from an aerobics class, and $5$ people from swimming classes.

Indentify the sampling method that was used.
Ten counties in Pennsylvania are randomly selected to determine the average county real estate tax that the residents pay.

Ten counties in Pennsylvania are randomly selected to determine the average county real estate tax that the residents pay, and identify the sampling method that was used.

Determine the sampling method that was used.

15. For 15 minutes, all customers entering a selected Walmart store on a specific day are asked how many miles from the store they live.

Twelve patients are in a hospital ward. Four have type A blood. a. What fraction of the patients have type A blood? b. What fraction of the patients do not have type A blood?

At a coffee shop, 80% of customers order coffee. Only 15% of customers order coffee and a bagel. What is the probability that a customer who orders coffee also orders a bagel?

What is the marginal product of the coffee shop workers? How much does a coffee shop worker earn?

Identify the sampling technique used and discuss potential sources of bias (if any). Explain.

Chosen at random, 1210 hospital outpatients were contacted and asked their opinion of the care they received.

What was Pavlov conducting research on before he started researching associations?

Compare and contrast pure research and applied research.

Categorize the type of sampling (simple random, stratified, systematic, cluster, or convenience) used in each of the following situations. To conduct a study on depression among the elderly, a sample of 30 patients in one nursing home was used.

Indentify the sampling method that was used.
To check the accuracy of a machine filling coffee cups, every fifth cup is selected, and the number of ounces of coffee is measured.