Dr. Guidry conducts a study examining the relationship between the number of friends one has and the experience of daily stress and life satisfaction. She randomly samples 1,500 elderly men and women in Nashville, Tennessee (the state capital), located in the southern United States. Considering Dr. Guidry's sample, which of the following statements is true? The association found in her study could probably generalize to elderly persons living in nursing homes. The association(s) found in her study could probably generalize to elderly people in other large cities in the South. The association found in her study could probably generalize to people living in other capital cities (e.g., Sacramento, California).

Coffee and Depression: Researchers conducted a study investigating the relationship between caffeinated coffee consumption and risk of depression in women. They collected data on 50,739 women free of depression symptoms at the start of the study in the year 1996, and these women were followed through 2006. The researchers used questionnaires to collect data on caffeinated coffee consumption, asked each individual about physician-diagnosed depression, and also asked about the use of antidepressants. The table below shows the distribution of incidences of depression by amount of caffeinated coffee consumption. (M. Lucas et al, 2011). Tip: Do NOT include the TOTAL row and column in your table when you copy into your technology application such as Statcrunch or a Calculator. ≤ 1 cup/week 2-6 cups/week 1 cup/day 2-3 cups/day ≥ 4 cups/day Total 373 905 564 95 2607 Clinical Depression: Yes 670 Clinical Depression: No 11545 6244 16329 11726 2288 48132 Total 12215 6617 17234 12290 2383 50739

A businesswoman is considering whether to open a coffee shop in a local shopping center. Before making this decision, she wants to know how much money people spend per week at coffee shops in that area. She took a random sample of 26 customers from the area who visit coffee shops and asked them to record the amount of money (in dollars) they would spend during the next week at coffee shops. At the end of the week, she obtained the following data (in dollars) from these 26 customers:17.00, 38.73, 15.30,14.44, 5.08, 63.61,10.16, 13.13, 32.15, 36.03, 16.31, 65.91, 10.30, 36.98, 3.32, 6.90, 34.54, 6.46, 36.37, 27.68, 38.55, 13.26, 9.75, 9.42, 1.26, 5.16Assume that the distribution of weekly expenditures at coffee shops by all customers who visit coffee shops in this area is approximately normal.Round your answers to cents.a. What is the point estimate of the corresponding population mean?b. Make a 99% confidence interval for the average amount of money spent per week at coffee shops by all…

A researcher was interested in knowing the relationship between asthma and mental illness among Veterans. As such, she surveyed a group of 15,000 Veterans On May 2024 to evaluate how many of them reported both mental illness as well as asthma. What type of study is it: prosepctive cohort study case-control study cross-sectional study retrospective cohort study