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- Consider the following scenario and answer the questions below: The ornithologist decided to investigate the effect of temperature on the migration of North American birds. Develop a hypothesis in the appropriate format. Identify the independent variable. Identify the dependent variable. Plan an investigation (what would she do to collect data?). Did she engage in basic science or applied science? Explain. Did she engage in inductive or deductive reasoning? Explain3. You would like to determine if there is a statistical relationship between the amount of caffein in a cup of coffee and their sales at their coffee franchises. The data is included in the set "Coffee by the Cup". Here is information about the variables. Variable Caffeine Cups Sold Measurement Amount of caffeine in one cup Number of cups of the coffee Units Milligrams Cups sold sold at all of the franchises a. Which variable is the explanatory variable and which variable is the response variable? b. Construct a scatterplot of the data. Based upon the scatterplot is there a linear relationship between the amount of caffeine in one cup of the coffee and the number of cups of coffee sold? Justify your reasoning using the scatterplot. c. Run a t-test for correlation using technology. Make sure you include the p-value and the printout. According to the t-test, is there a statistical relationship between the amount of caffeine in a cup of coffee and the number of cups sold? Justify your…8. Trace metals in drinking water affect the flavor of the water, and un-usually high concentration can pose a health hazard. Table 1 shows trace-metal concentrations (zinc, in mg/L) for both surface water and bottom water at six different river locations. Our aim is to see if surface water concentration (x) is predictive of bottom water concentration (y). a. State the independent and dependent variable? b. State the Ho y HA c. Draw a scatter diagram to show a possible association between the concentrations and check to see if a linear model is justified. d. Calculate the correlation coefficient and provide your interpretation. e. Find the regression equation and pro your interpretation. Table 1 1123456 Location Bottom 0.430 0.266 0.567 0.531 0.707 0.716 Surface 0.415 0.238 0.390 0.410 0.605 0.609 I
- 5) Which type of data is provided in the scenario given below? a.) neither accurate nor precise b.) accurate, but not precise c.) precise, but not accurate d.) precise and accurateQuestion 1: A high school senior is collecting data on the colleges in which she is interested. Identify the variables as either categorical or quantitative. a) Type of college: Private or Public College b) Tuition: In thousands of dollars c) State: The state in which the college is located d) Graduation Rate: as a percentage e) Enrollment: Number of students enrolled1.The Prevalence of having health insurance (as a decimal) for 1 (Table 4 box b. above) is: 2. The Prevalence of having health insurance (as a decimal) for 2 (Table 4 box e. above) is: 3.The Prevalence of having health insurance (as a percentage) for 1 (Table 4 box c. above) is: 4.The Prevalence of having health insurance (as a Percentage) for 2 (Table 4 box f. above) is:
- Examine the variables of interest for the following situation and identify the type and level of measurement of each variable. In applying for a credit card, the following information are being asked for from each applicant a. nationality b. number of dependents c. length(months) of stay in present address d. residence type (renting, fully owned, company residence, etc) e. class of municipality where the residence is found (low, middle, high income) 3 b C d e VARIABLE TYPE LEVELThe distribution of hemoglobin in grams per deciliter of blood if approximately N(14,1) in women and approximately N(16,1) in men. Use software or Table B to find the answers. A) What percent of women have more hemoglobin than the men's mean hemoglobin? B) What percent of men have less hemoglobin than the women's mean hemoglobin? C) What percent of men have more hemoglobin than the women's mean hemoglobin?A study regarding the average cost of online streaming services in two states (A and B) is conducted. The results are shown in the following table. X and Y are independent.
- A common cause factor that would affect both attendance at the beach and ice cream sales at the beach would be: 1.day of the week 2.cost of ice cream 3.weather 4.sales of bathing suits2. How does the cost of shipping a standard-sized crate relate to the distance of the destination? Can the cost of shipping be determined using the distance of the destination? To answer these questions, a Philippine Airlines statistician used 12 freight invoices randomly drawn and summarized below. Distance (hundred of kilometers) 14 Charge (in pesos) 1400 23 2000 9. 800 17 1600 10 1620 22 1900 620 1440 900 1800 5 12 16 25 2100 8 750 (c) Plot the regression line on the scatter diagramcatagorize the following variables as being qualitative and quantitative? 1, response time 2, the type of drinks ordered by seven people at a bar 3, rating of job satisfaction 4, favourite color 5, the occcupation of the father of children in a third grade class 6, nomber of words remambered