Question:

Consider a family with a mother, father, and two children. Consider the following set of events: A1 = {mother has influenza}; A2 = {father has influenza}; A3 = {first child has influenza}; A4 = {second child has influenza}; B = {at least one child has influenza}; C = {at least one parent has influenza}; D = {at least one family member has influenza}. What does A1 ? A2 mean?

(a) Either the mother or the father has influenza (b) Both the mother and the father have influenza (c) Neither the mother nor the father has influenza (d) All the family members have influenza

2. Consider a family with a mother, father, and two children. Consider the following set of events: A1 = {mother has influenza}; A2 = {father has influenza}; A3 = {first child has influenza}; A4 = {second child has influenza}; B = {at least one child has influenza}; C = {at least one parent has influenza}; D = {at least one family member has influenza}. Are A3 and A4 mutually exclusive events? (a) Yes (b) No (c) Maybe

3. Consider a family with a mother, father, and two children. Consider the following set of events: A1 = {mother has influenza}; A2 = {father has influenza}; A3 = {first child has influenza}; A4 = {second child has influenza}; B = {at least one child has influenza}; C = {at least one parent has influenza}; D = {at least one family member has influenza}. Express D in terms of B and C (a) D = B or C (b) D = B & C (c) D does not equal B or C

4. Consider a family with a mother, father, and two children. Consider the following set of events: A1 = {mother has influenza}; A2 = {father has influenza}; A3 = {first child has influenza}; A4 = {second child has influenza}; B = {at least one child has influenza}; C = {at least one parent has influenza}; D = {at least one family member has influenza}.

• Suppose an influenza epidemic strikes a city. In 10% of families, th
  

10 poin The basic difference between macroeconomics and microeconomics is that: macroeconomics is concerned with generalization while microeconomics is concerned with specialization. microeconomics looks at the forest (aggregate markets) while macroeconomics looks at the trees (individual markets). microeconomics is concerned with the trees (individual markets) while macroeconomics is concerned with the forest (aggregate markets). macroeconomics is concerned with groups of individuals while microeconomics is concerned with single countries.Question 1 (1 point) A fundamental assumption of economics is: A social phenomena emerge from the actions and interactions of A/ who are A/ in response to expected additional A and A/ to A Question 2 (1 point) Official data on unemployment are based on ()the number of responses to ads in the help-wanted section of major newspapers. the number of actual payments for unemployment compensation. the number of claims for unemployment compensation. a survey of households by the Bureau of the Census. employer data on hiring rates