Researchers surveyed recent graduates of two different universities about their annual incomes. The following two-way table displays data for the 300 graduates who responded to the survey. Annual income University A University B TOTAL Under $20,000 36 24 60 $20,000 to 39,999 109 56 165 $40,000 and over 35 40 75 TOTAL 180 120 300 Suppose we choose a random graduate from this data. Are the events "income is $40,000 and over" and "attended University B" independent? These events are independent not independentFind the mean point for the following set of data. Athlete A B C D E F G H L K L Age (years) 12 16 16 18 13 19 11 10 20 17 15 13 Distance thrown (m) 20 35 23 38 27 47 18 15 50 33 22 20 mean point:POSSIBLE POINTS: 5 It is known that 56% of Infiglow batteries have a life of less than 16 hours, and 94% have a life less than 17 hours. It can be assumed that battery life is modelled by the normal distribution NV (u, o?). Find the value of / and o. O=POSSIBI The following tables lists the probabilities associated with the number of books that Pam checks out when she visits the library. The value of a is E. On average, how many books does Parn borrow? ( i.e. E(x) ): Consider rolling a die. What is the probability of rolling a number less than 4 given that the die is odd