Three hundred tenured professors at Florida Universities are randomly sampled and are asked: “On what day of the week were you born?” The results are in the table below. Assuming that each weekday has an equal theoretical probability, which day of the week has the most unusual observed frequency in this sample?

Which of the following statements is true? a. the irrational number system is not closed under multiplication, because the product of two irrational numbers is always a rational number. b. the irrational number system is not closed under multiplication, because the product of two irrational numbers is not always an irrational number. c. the irrational number system is closed under multiplication, because the product of two irrational numbers is always an irrational number. d. the irrational number system is closed under multiplication, because the product of two irrational numbers is always a rational numbers. reset submit