1. The following data designate whether patients in two groups (experimental and control) have complied with a medication regimen (1=yes, 2=no) after the experimental group participated in an intervention designed to promote perceived mastery over health events: Experimental: 1 2 2 1 1 1 2 1 2 1 2 1 2 Control: 2 21 2 2 2 1 2 1 2 2 1 1 2 2 Using StatCrunch, construct a contingency table for these data, computing row, column and total percentages for each of the four cells. [20 points] Below are the values for diastolic (independent variable) and systolic (dependent variable) blood pressure for 10 people: Diastolic: 90 80 90 78 76 78 80 70 76 74 Systolic: 130 126 140 118 114 112 120 110 114 116 a. Using StatCrunch, construct a scatterplot that shows the relationship between the two variables. [15 points] b. Based on your scatterplot, describe the direction and strength of the relationship. [5 points] ANS. a. b. Referring back to Exercise #2: a. Compute the correlation coefficient (Pearson's r) in StatCrunch to summarize the relationship for the data presented in Exercise #2. [5 points] b. How accurate was your description from Part (b) of Exercise #2? [7 points4. Below are Global carbon dioxide concentrations (independent variable) and the measured change in Global temperature (Temperature Anomaly) (dependent variable) for an 1 1-year period in our recent past: CO2 Concentration (ppm) Temperature Anomaly (C) 339.93 043 341.13 022 342.78 097 344.42 074 345.90 091 347.15 066 348.93 267 351.48 155 352.91 267 354.19 509 355.59 430 a Using StatCrunch, construct a scatterplot that shows the relationship between the two variables (carbon dioxide concentrations and the measured change in Global temperature). [10 points] b. Calculate the r value. [4 points] ANS. C . Describe the direction and strength of the relationship. [6 points] ANS. d. What does the scatterplot tell you about Global warming? [8 points] ANS. 5. Probability: a. What is the probability of rolling four (sum total on the 2 dice) in the gambling dice game of craps (given two six sided dice)? [5 points] b. What is the probability that a player can roll a four 3 times in a row (given two six-sided dice)? [5 points] ANS. a. b. 6. Population A and Population B both have a mean height of 70.0 inches with an SD of 6.0. A random sample of 30 people is picked from population A, and random sample of 50 people is selected from Population B. Which sample mean will probably yield a more accurate estimate of its population mean? Why? [10 points